E3M8
E3M8 is the final level of Doom's third episode. It’s where you get your butt kicked by the Spider Mastermind, the biggest pain in the ass of the whole game.
'I just died 10 times in E3M8. That spider is a nightmare.'
'E3M8 is like the final exam of Doom. I failed it twice.'
'I spent 3 hours on E3M8. My brain is fried.'