Vermil

EDIT: Please delete me.

My collecting hobby is physical video games. I've got about 8000 now.

EDIT: Please delete me.

Destructible walls ala Operation body count or Catacomb, would be easy in Doom ports with XG, ACS etc etc. Might even be able to fudge it with vanilla Doom actions? Indeed I've done OBC style destructible walls using XG before for instance.

Not quite; as a port fully supporting Heretic and HeXen (as opposed to most other ports partial support), there was/is Doomsday in between Vanilla (HHE and HEX) and GZDoom; Heretic Doomsday supported near all of Doomsdays modding features from mobj defs to XG etc etc. But no non-visual mods (i.e model packs etc) were ever released for Doomsday Heretic. HeXen Doomsday didn't support XG (though naturally it supported Vanilla HeXen ACS), but it did/does support mobj defs, infine etc. Again no -non-visual mods were ever released for it.

Barron's already do up to 80 damage in melee, which means it can kill a 100% marine in a couple of attacks, if the RNG goes that way.

The vampire graphics are good, but it looks a bit odd that the attack sprites don't match the state that spawns the projectile/does the damage? Also, quite a big jump to the position of the first death sprite?

Higher resolution's Uncapped FPS Infinite height removal Full screen hud

Spidie actually uses the same attack as the Shotgun zombie. The Doom2 manual describes the Spiders weapon as a super chaingun.

Maybe try using the Cyber demon's missile action, rather than the player one?

Indeed, the closest to in game map editing classic Doom has got is probably Doomsday's inbuilt Bias light editor:

Or whether the source code actually still exists. Not every company was like ID.

It was also one of the images on the back of the box: https://www.mobygames.com/game/299/doom-ii/cover/group-1553/cover-3964

If all you wish to do is play the original games with enhanced graphics and you are on Windows, I would recommend Doomsday 1.8.6. Naturally, as it's very old version of the port, it probably won't play modern mods though. https://sourceforge.net/projects/deng/files/Doomsday Engine/1.8.6/

I'd only say the same, so I'm quoting it :p