One of the other things I love (beside certain pink-haired girl) is Doom, of course! And, while I'm not that skilled enough, I also like slaughter maps too (until you die because you use the same strategy over and over again and have to record your demo again...)

• I didn't put a determined number of levels, and I didn't also programmed an ending if you ever get that far.

• I programmed all the monsters from Vanilla Doom II, classified from low-tier (former humans, imps, pinkies and lost souls), mid-tier (pretty much everything in between) and high-tier enemies (archviles, the cyberdemon and spiderdemon).

• I also programmed most of the weapons from the game (or at least the ones you'll be using the most). Feel free to bring your own if you want.

• Don't worry about getting hurt from falling from a building, I got rid of fall damage.

• If you die, tough luck. You'll have to restart the current map you're in with your pistol and 50 bullets (unless you modify your previous messages). The starting room of every map will have enough ammo for you to fend off the demons, so it's not the end of the world if you have to pistol start again.

• There aren't more than 5 archviles per map, so keep your head cool and stay focused.

• ... story? lore? what are those?

The screenshot is taken from TimeofDeath's flanagan map (featured in the Eternal Slumber Party 2 compilation WAD). I once had a good start on this map but got killed by a stray cyberdemon rocket. Good grief...

I did a bit of testing but if there's something off with the bot, as always, feel free to point it out in the comments and I'll see what I can do.