-In the part of Ada chap 2 where you have to take out the hulking gorilla enemies so a door will open, you can take out their cocoons before triggering the even and the door will just let you pass -If you take cover next to a closed door, you can open it from cover with A -If you slide or roll forward, pressing back will make you do a 180 roll on the ground
Debora's arena battle can be won on No Hope with 3 sniper shots and 2 handgun bullets. Use explosive barrels or damage enough, and she falls and exposes a glowy. You can then get close and do a melee QTE to take it out
Chris 4 - Lower the stairs first, then destroy the bulkhead. Before you jump back down, tag any of the J'avo at ground level. Your AI partner will trigger the jet but it will be unable to shoot you, plus you're at the perfect vantage point to take out the pilot and stop the guns. Makes the last part of the stage a lot more leisurely!