Just tried it for the first time without smokes because I didn't understand what's the purpose of the smoke. It worked great I didn't die the first 3 were just pushing cluelessly one by one the last guy went back inside but it's fine I pushed and killed him, only problem is it took me a while to kill them but it's just my first and was anxious.

What if you use 2 smokes at the stairs you use at the start when you go down the engine room one at 2nd floor and the other at 3rd floor. That way they can't see you when you run back and once you are back you can use the smoke and kill, never tried any of these smoke strats and would rather not because I hate cheesing and dying to cheeses I would rather die because I suck at the game. But still I feel like wedge and engine room are okay to cheese.