I love System Shock 2, but to the designer who made the engineering level: What the fuck were you thinking?
First there is this massive maze with irradiated corridors, then a huge walkway with way too many doors in between. Oh and the cargo bays, 4 rooms with 3 levels to explore with mostly nothing but enemies, but sometimes a bit you want.

The quest is the worst the game has to offer. Go to engineering, to all the way to the end to get to the respawn point, then to the cargo bay to get a code, then to the other.
That unlocks the code to an a thing in the middle. You go back to a storeroom in the maze, if you can find it. You pick up a part, then go all the way to the the end of the level again to insert a thing somewhere, stop at the middle section, hit a button. Go back to the maze to the now unlocked nacelle levels (where you have to boop some buttons, but it's not as big and painful).

The only redeeming bit about this level is the music. #SystemShock2