Ok, so here is a list of all known skips and exploits in GOW4. (If you wish to add to this list or want to discuss a specific skip then message me in the forum.)
------ XBOX - Load time reducer ----- Before your run, make sure you load up ACT1 CHAPTER 0 and wait for the first checkpoint save to finish. Once this is done, quit back to the menu.
This will reduce the load times as the game will cache some game assets reducing the load time. This has to be done per instance of GOW4 started.
This doesn't apply to PC
------ XBOX/PC - Fabricator Skip ACT1 ----- At the start of ACT1 CHAPTER 4 mash A whilst the level is loading. If you manage to roll as soon as the level loads you will be in the wrong posistion for the fabricator therefore despawning the fabricator.
Now you are not forced to drag the fabricator you have full control over JD. If you run up to the first gate where 2 people are standing you are able to slide into cover to the left of the gate and jump over.
By jumping over this little brown fence you have bypassed two invisible walls and about 3-4 minutes of auto scroller. You are now able to run straight to the town centre and trigger the next cutscene.
------ XBOX/PC - Cutscene Skip ACT2 ----- At the start of ACT2 CHAPTER 1, walk up to Marcus's little shack and press X on the door. (DO NOT TRY TO SKIP THE CUTSCENE YET!)
When the cutscene plays you will see JD's hand open the door, when the door opens you will see Marcus sitting in his chair.
When you see Marcus sitting in his chair double tap SKIP to skip this "unskippable" cutscene. Normally you will be locked into watching this 5 minute cutscene. But for some reason if you skip the cutscene during this window you can skip it and jump straight out of the window.
------ XBOX/PC - Walk Exploit ACT3 ----- Near the end of ACT3 CHAPTER 1 just before marcus get's snatched (SPOILERS!) you are forced to walk past a bunch of pods down a long corridor.
Usually the developers lock down the ability to roadie run and slide into cover. However for some reason the developers locked down the ability to roadie run but not sliding into cover.
Because of this you are able to exploit this glitch and slide your way forward much faster than intended.
------ XBOX/PC - Sequence Break ACT3 ----- Near the end of ACT3 CHAPTER 2 you need to cut through the "door snot" to reach a button to call down the cable car. As soon as you hit the button mash A and pull back on the left stick.
You have a tight window to do this but if you get it, you will roll backwards out of the control room, where you can then just run up to the cable car entrence. This skips the stun animation and the animation where the camera focuses on the cable car crashing down. This saves around 20 seconds in total if done correctly.
