Double agent was developed for 360 then ported in the most ass way possible to PC
There are so many bugs and glitches and the game tends to be unstable
Therefore, the guards have terrible senses meaning I can stomp around more often compared to the 360 version

The guards hearing is really fucking garbage and inconsistent. Some guards might have better hearing than others for some random reason. Sometimes the guards can hear Sam, then stop hearing Sam, then start hearing Sam again all in the same moment. Its really obnoxious and jarring

The guards vision is somewhat more consistent than their hearing, but that isn't saying much.

Reloading a save even once, can SOMETIMES cause the guards to become even more deaf. I'm not sure why it happens, how long it lasts, or what causes it but it just does. They don't become completely deaf and it doesn't appear to affect their vision. It something I stumbled upon on accident. Also the 360 version doesn't have this problem

Smoke grenades are really hilarious in this game. THe coverage is larger than what the smoke shows. Also the guards senses drop like a rock when they enter the smoke

Also, when loading a save, the HUD resets itself. Example, having the radar on, saving and loading that save, causes the radar to turn off.

I am using patch 1.02a

[Iceland: [04:45]]

The bullshit ladder is really inconsistent here. In practice runs I could run past him and he won't sense me at all. But in this run, he does hear Sam, but doesn't give a shit and acts like nothing happened.

Also here is the first example of the smoke grenade coverage.

[Jail: [04:15]]

More hilarious smoke grenade action

[JBA Part 1 [11:15]]

I'm surprised that I managed to get Jamie to go away so quickly. Also the first guard at 7:25 is an example of the guards hearing Sam, then stop hearing, then hearing again.

You might notice that after JBA part 1, I was supposed to get three unlocks. The missing unlock is the electronic lockpick. The electronic lockpick is or WAS in the game since it shows up in version 1.0, but you can't access unlocks since everything in 1.0 is broken as fuck. After patching the game to 1.02a, its simply not there anymore. I'm guessing they couldn't get it to work properly and decided to patch it out of the unlock screen. This wouldn't be surprising considering the many things that are broken in this game.

[Sea of Okhotsk: [10:26]]

This guard at 4:24 has horrible senses.

5:35 and 6:08 is hilarious as it looks.

The guard at 8:06 is glitched and walks in place

Also, the captain is not a solid NPC at 10:12. He is scripted to go around the corner and disappear. Its funny how the audio glitches out

[Shanghai: [09:40]]

Here's another example of the guard's inconsistent hearing. This part at 2:41 is as hilarious as it looked. That guard didn't notice my footsteps until I passed him. Also, the two guards didn't hear me when I was downstairs, but apparently heard me when I was upstairs?

The majority of this mission is a gigantic bottleneck. Also the dragon jump got me killed way too many times.

65 GAMEOVERS

[JBA Part 2: [08:51]]

This mission is as boring as it looks. This mission is a gigantic bottleneck like Shanghai.

[Cozumel: [07:55]]

At 3:33 is another example of the horrible senses of the guards. This was hilarious as it looked. Also I like how the crewmember reacts by grabbing his handgun but doesn't sound an alarm. I'm surprised I managed to do this again like in my previous run.

Here at 5:10, you can see how strong smoke grenades are. Smoke grenades cause the guard's senses to drop like a rock.

The crewmembers at 7:28 for some reason can't hear this door being bashed. Also, this route and door bashing works on the 360 version, but with slight modification.

The guard in the bomb area can't see through the glass door, yet the crewmembers in the command deck could see through the glass windows. The developers never picked up on this apparently. This applies to the 360 version too.

Also, the guard can't hear the door being bashed, the smoke grenade bleeds through the roof, and this also works on the 360 version.

[JBA Part 3: [16:05]]

Time to repeat the same shit from JBA 1 & 2. Also, for some reason, the first fingerprint scaned double counts the amount of trust given, yet this doesn't happen with voice samples in JBA Part 2.

Also, the Visual proof of bomb of objective is automatically hacked.

I don’t know if the the automatic hacking for the visual proof of bomb is a bug or a feature.

My conjecture is that the developers couldn't get the intended area working. The "intended" computer is the one you see in this run. The issue I discovered is that someone on the lower floors can see you hacking the computer—and if you are seen hacking, then it is an automatic gameover. Their solution was to give a freebie by automatically hacking the computer. It also happens in the 360 version.

Even though the game indicates that you get three unlocks from this mission, there are only two left in the unlocks

[Kinshasa: [11:13]]

The first two guards are amazingly deaf and blind. This also works on the 360 version

Then after the elevator, the next two guards aren't and are obnoxious to get by.

I don't think I can speed up the meeting room objective. It seems like an unavoidable bottleneck.

Also, Emile can hear Sam if I get off too early, but after walking off the carpet, Emile's hearing suddenly drops.

I don't know what happened with that smoke grenade at 10:05, but it distracted that soldier.

Its funny how the smoke grenades at 10:53 causes the two soldiers to freak out.

[JBA Part 4: [07:57]]

JBA part 4 gets 99% stealth because regardless of what I do, I have to fire that bullet. The game doesn't even save the score, it just gives a 0%. Apparently what the game does is copies the NYC boat Stealth score and pastes it over JBA Part 4. Everything after 10:50 is just proof of this.

Also JBA Part 4 cannot be finished in a 16:9 resolution. If you try to, then game softlocks as the SWAT Team doesn't load.

Not much to say for the beginning.

When I reach the high security basement, the meter on Sam bugs out and fails to synch up with HUD. This bug also happens on the 360 version

In the bomb area, you can see how hilarious smoke grenades are. The first smoke grenade lures Emile out and also bleeds through the walls. The smoke grenade coverage is larger than what the smoke shows and this is a funny example of it.

[NYC Boat: [01:11]]

I really don't think I can go any faster

Also this trick with ultrasonic emitter doesn't work on 360.

It's really horrid when Sam can be killed jumping off the boat, which happened in a previous attempt

Additionally, this mission doesn't penalize for killing/KOing, being Identified as an intruder, or force hacking. It does penalize for bodies found. The game gives the no indication of all this.

UNLOCKABLES:

[Iceland:]
Emp Grenade
Explosive Sticky Cam

[Jail:]
Ultrasonic Emitter
Stun Mine +

[JBA Part 1:]
***Electronic Lockpick*** see JBA part 1
Gas grenade
OCP recharger

[Sea of Okhotsk:]
Flash mine ++
Shotgun shell

[Shanghai:]
Faster Hacking 1.5
Smoke grenade Launcher

[JBA Part 2:]
Sonic grenade Launcher
Force Hack 2.0

[Cozumel:]
Emp grenade Launcher
Gas Grenade Launcher

[JBA Part 3:]
Frag Grenade Launcher
“Enhanced NVG"

Welcome to one of the worst ports I have ever seen.
It is very glitchy, unstable, and inconsistent due to poor/non-existent testing.
They released a broken game and then barely patched it

Since Double Agent was developed for the 360 then ported in the most ass way possible to PC, the guards have amazingly bad senses. That doesn't mean they can't detect me, it just means that I can stomp around more often compared to the 360 version. The guards are noticeably deafer compared to the 360 version. Sometimes the guard's deafness is inconsistent too, as in some guards might have better hearing for some unexplained reason. Even though they have better hearing in the 360 version, the guards are generally the same glitchy as fuck and inconsistent guards as the PC version. The guards tend to glitch out, act erratically, and/or have problems seeing Sam even in daylight missions.

Reloading a save even once, can cause the guards to become even more deaf. I don't believe they become completely deaf. I haven't tested how long it lasts or why it happens, but it just does. It's another thing I stumbled upon on accident. It doesn't appear to affect their vision. Also, it doesn't work on the 360 version. When reloading a save, the HUD doesn't synch up with how it was when I saved. Example, having the radar on when I save, then reloading causes the radar to turn off.

This game can bug out whenever it feels like it. Even in Version 1.02a, many things are broken in this game and visual graphics can inconsistently work.

• 01 Iceland:[04:45]
  
  Got lucky and managed to get the past the bullshit ladder guard without him detecting me. I'm pretty sure running past him will not work in the 360 version, for 100% stealth anyways. Now what surprised me, was that he got suspicious but apparently doesn't give a shit and acts like nothing happened. This freaked me out because this never happened in practice runs. Infact, in practice runs I just run past him and he doesn't react at all. It appears that if you go too fast in this area, the ladder guard apparently doesn't activate for some reason. If you go through the area through the "normal" way, he does activate. Of course, if you disturb him in any way, he will start moving.

  I managed to get 4:44 in practice runs, but I decided that one second isn't worth restarting for.
  
  

• 02 Jail:[04:15]
  
  It is easy to accidentally miss the pipe when crawling out of the tunnel.

  3:48 shows how funny smoke grenades can be, the shotgun guard was apparently dazzled by the smoke.

  After exiting the elevator, I'm not sure if the guard's positons are random

  Rolling on the fence was a shortcut I stumbled upon
  
  

• 03 JBA HQ Part 1:[11:15]
  
  Safe cracking is harder than it looks in the PC version since the developers did a shit job in porting the movement controls on the dial.

  I don’t think I can do any better on the firing range.

  At 7:30, I have no idea how I got Jamie to go away so fast. So I quickly improvised.

  The electronic lockpick was in the game since it shows up in version 1.0, but you can't access unlocks since everything in 1.0 is broken as fuck. After patching the game to 1.02a, its simply not there anymore. I'm guessing they couldn't get it to work properly and decided to patch it out of the unlock screen. This wouldn't be surprising considering the many things that are broken in this game.
  
  

• 04 Sea of Okhotsk:[10:26]
  
  Eliminating the crew on the tanker can get obnoxious at times since they can sometimes suddenly hear Sam or somehow know where a body is. But thanks to the horrible senses of the guards, this level is easier to sneak through. Despite this, Sea of Okhotsk is still a horrid level to finish. This is one of the few times I'm glad this game is so broken

  The guard at 7:44 reacts but apparently doesn't care, just like in iceland. This guard is bugged since he is stuck walking in place.

  Jumping off the rail got me killed way too many times than I can count.

  Also, the captain is not a solid NPC at the time. It doesn't seem like he can interact with Sam at this time. Since the developers never expected players to go this fast, he is scripted to run around the corner and disappear. The sound effects even plays when I approach him.
  
  

• 05 Shanghai:[09:40]
  
  I'm surprised that Emile is actually sitting in his seat instead of the air. This is the first time I've seen this part not break

  The majority of this mission is a gigantic fucking bottleneck. I really don't think I can scale the building any faster.

  Exiting the helipad is straightforward. Now entering the building is a little bugged compared to the 360 version. You will see me hang to the right to lure the guard, but the guard can sometimes see Sam hanging even though the light is green.

  Jumping and sliding off the dragon got me killed too many times times.

  65 GAMEOVERS

  There's nothing wrong here at 10:05
  
  

• 06 JBA HQ Part 2:[08:51]
  
  Mines have to be the most boring shit I have ever seen.

  Otherwise this mission is straightforward. The ultrasonic emitter part was another thing I discovered on accident. It was usefully to make Jamie go away.

  Just like shanghai, the majority of this mission is a gigantic bottleneck. If it weren't for the mines, this would be a very short mission.

  It appears that mine building is significantly faster, but harder to control on the 360 version.

  I really don't think I can go any faster in this mission
  
  

• 07 Cozumel:[07:55]
  
  I don't know what causes that crew member dressed in white at 3:38 to leave by running down the stairs towards me or by using the door behind him. I guess its random

  I like how his response to Sam rolling in front of him, is to grab his pistol but not sound an alarm. I'm surprised that I managed to do this again.

  There is totally nothing wrong with this door on the left at 4:20

  Smoke grenades causes the guards senses to drop like a rock. Maybe its just me, but it seems that the smoke grenade coverage is slightly larger than what the smoke shows.

  For some reason, the guard in the bomb area can't see me through glass door, yet the crew members in the command deck could see through the glass windows. The developers never picked up on this apparently. I'm starting to believe that the glass doors are actually regular doors reskinned
  
  

• 08 JBA HQ Part 3:[16:05]
  
  I had to bolt out and get Enrica's disarm code before she returns to her office. Also, Enrica's fingerprints are needed for a faster unlock in JBA Part 4 but I don't think there is enough time to scan them in her office.

  Then I had to get over for the visual proof of the bomb. I personally do not know what determines which computer has the proof. I think it is random. This is fucking retarded because on the 360 version, the computer that has the proof is always the same. The computer you see in this run is same one as the 360 version.

  I not completely sure why/how the game automatically hacked that visual proof. It seems like that is either a bug or some sort of feature. The only reason I can think of, is that the developers noticed that someone on the lower floors can see Sam hacking the computer—which will result in a gameover. I'm guessing this is their quickfix towards that problem.

  Hooray, time to repeat the same shit from JBA 1 and 2 since the developers needed to inflate gameplay time. Bottlenecks everywhere.

  IIRC, blowing up the boat saves about 12-13 seconds, something like that. Otherwise those extra seconds are due to Emile being anger and blowing Enrica's head off.

  Just like JBA HQ Part 2, I really don't think I can go any faster
  
  

• 09 Kinshasa:[11:13]
  
  The first part at 1:40 is very easy and hilarious as it looks. These two guards are amazingly blind and deaf.

  Then after leaving the elevator, the next two guards at 2:03 are not deaf and blind. They love to be uncooperative. I can't remember how many attempts that took.

  I don't the meeting room can be skipped or sped up.

  After the meeting, Emile is very deaf for some reason. I actually can be heard if I get off too early, but after a certain threshold, Emile apparently doesn't hear Sam running up behind him.

  Its really hilarious how those two soldiers at 11:00 freak out by the smoke grenades.
  
  

• 10 JBA HQ Part 4:[07:57]
  
  There is a very stupid bug in JBA HQ 4. Even in patch 1.02a, the game still penalizes me for firing that one mandatory bullet, resulting in a 99% stealth rating. But the even weirder part is that after finishing the level and going back to the mission menu, the game doesn’t save the score, it just gives a 0% stealth score. I found this out by accident, but apparently the game uses the stealth rating on the NYC boat level and pastes it onto JBA HQ 4.

  IIRC, the 360 version doesn't even show the stealth score at the end of the mission.

  The underground basement is very jarring to speedrun. The first half of the basement is a cakewalk with the second half can potentially be a major pain in the ass. Also, the visibility sensor on Sam bugs out and fails to synch up with the HUD. It seems like it only happens in this specific part of the game.

  The scene where the guards kill the scientists can have unpredictable results. This game is so broken, that even in game cut scenes can break. The guard can instantly kill the two scientists, or he can miss several times before killing them with the timer still running.

  The final part with Emile and his men in the bomb area is really hilarious, Smoke grenades can bleed through walls and you can see how large the smoke coverage is. Also, it appears that Emile bugged out and stood there staring. It's kinda hard to see

  There is also an infuriating 16:9 resolution glitch in JBA part 4. If you try to finish the mission in a 16:9 resolution, the game softlocks as the SWAT team doesn't load for some stupid reason. It gets even worse because the in-game timer is still running during the SWAT raid.

  The 360 version shows that 3 SWAT members are supposed to show up, but the first one that appears is one that drives the cut scene. The cutscene is obviously broken in many ways. It is visually inconsistent and I have seen it fail to work even in 16:10 resolutions.

  And it doesn't just end there. There is a very nasty bug that occurs during the good ending. When the bomb is defused, Emile and his men are removed from the area and placed in a room far outside the map. During the good ending, Sam is also placed in that same room. Sometimes the AI is still active when they are moved into that room—and they can run into Sam and gun him down, causing a game over during the SWAT raid. I also found out that this bug can occur in the 360 version too. Now imagine a single-segment 100% stealth run.
  
  

• 11 NYC Boat:[01:11]
  
  I REALLY don't think I can go any faster

  The guard bolting out of the room was something I stumbled upon on accident. Punching Moss is faster, because grabbing him or knifing him results in a long ass scripted animation.

  This mission is strange since it didn't penalize for force hacking or even being identified as an intruder. The thing is, the game gives NO indication that there is no longer penalty for doing those things. It does dock points for a body being found, but doesn’t penalize for killing or KOing.

  Sam can actually be killed when jumping off the boat. Once Sam exits the door, I lose control and Sam automatically jumps off. Sometimes I can get randomly detected when I run out to the door.

  On an unrelated note, it appears that the water effects look better on Nvidia cards than AMD cards. Thanks a lot Ubishit.

  If there are any new timesaves, then forget it.
  
  

Special thanks to prospy05