Holy s***, there's a monster in the lift.

That's not supposed to happen. The lift is the end of the level. It's a safe zone, a chance for a breather before the game totals your score. For God's sake, it's a universally acknowledged cessation of hostilities. But this time, there's a monster in the lift and both my friend and I physically reel with shock, spasming backwards as the thing lurches towards us.

[...]

Doom is not only the best looking thing we've ever seen, but it's also the first game that's ever given us any sense of fear, that's ever reached right down to our brainstem and tugged hard.

[...]

For two young teens in the early 90s, Doom is merely the next big thing in a rapidly-accelerating gaming industry that soon leaves it behind. We never really notice that it's Doom itself which had stamped its boot on that accelerator, but we'll have Doom to thank for so much that we'll come to take for granted, its influence scattered across modern video games like shotgun pellets.

Another one? How many Doom retrospectives can you read?