This here's a classic level, and one featuring more nukage than the supposed "Nuclear Plant." As soon as you open the first door, you're greeted with on the most iconic rooms in the entire WAD; a raised walkway bordering a big ol' pool of corrosive sludge, teeming to the brim with pinkies, shotgunners, and zombiemen. Toxin Refinery is a great example of what most people think of when they think DOOM; On Ultraviolence (and especially UV-fast) you really start getting put through your paces here, with crowds of hitscanners that start out across the room while you're stuck dealing with the up-close melee monsters, plus a smattering of imps to harass you as well. It's on this stage where you really start to learn how terrifying pinkies can be when playing with -fast, they'll get right up in your face and stay there in a way that you just really don't have to deal with at normal speed, and of course shotgunners will almost instantly deal damage on sigh
Filth and Philosophy