Here is the full list of all 15 Lifeline achievements.
Kill Taylor for the first time by reaching a dead end.
Reach a dead end in the game and kill Taylor 10 times. Poor Taylor.
Reach a dead end in the game and kill Taylor 15 times. Poor Taylor.
Reach a dead end in the game and kill Taylor 25 times. Poor Taylor.
Go all the way back to the beginning of the game and try again
Pay respects to the casualties of the crash.
Find Taylor’s rats and feed them the pellets.
Find the Chinese writing on the wall.
Find and take the pain pills.
Eat the chili mac ration.
Help the enemy by tossing a glow rod for the incoming Greens.
Play from start to finish without killing Taylor.
Rescue Captain Aya.
Find an ending where Taylor survives.
Complete the game without fast mode.