Haha, fuck yeah I'm on LEVEL 3 at the second. It's insanely hard, and I suck at FPS games. Like my strategy has been SLOW AND STEADY, but there's a part early on in Level 1 (CONGO) where there's a red key and you're on thin crossroads platforms. You go slightly towards the red key and BAM, two chaingunners, a pain elemental, a mancubus, some lost souls, and a fucking beholder appear surrounding you. Fighting them all with a pistol and shotgun was ridiculous.
I'm savescumming the hell out of the game, but I had to do that with Doom 2 too

. Otherwise I'd have never gotten very far in it at all.