The Baron's rabbit punch glory kill is slightly misaligned. I have tried to fix it, but I have no idea where the issue stems from.

Some MP animations were not included as I couldn't get the body to ragdoll after death, resulting in them being frozen in strange poses after death

The Cyber-Mancubus' MP animations replaced its vanilla animations because that was easier from a technical perspective. Both Mancubi share the same files for glory kills, so a whole new set of glory kills would need to be defined if I were to keep the vanilla anims for the Cyber-Mancubus, which requires a lot of files to be edited, which conflicts with map mods.

In the game files, the shotgun melee kills for the Imp are listed under the killedByPlayer_shotgun subweb. For reference, the other subwebs are killedByPlayer (regular glory kills), killedByPlayer_berserk, and killedByPlayer_chainsaw. Following that logic, the shotgun is intended to be used in those animations. The fact that the shotgun fits in the Slayer's hands during these animations also backs up this theory. My best guess is that these animations were cut/unused because cutting someone in half with a blunt object seems unfitting, even if they are the Doomslayer. Ideally, if there were some kind of melee weapon that could be gripped similarly, I would use it instead of the shotgun, but I cannot find such an item at this time.

The front chest shotgun glory kill for the Imp does not have an animation file for the shotgun. I was able to work around this by attaching a shotgun to the Slayer's hands as a prop, but I cannot get the prop shotgun to actually fire like the real thing. This was worked around by placing a brief flash of light at Imp's chest to simulate the muzzle flash. If something looks off to you, this is why.

The telekinetic glory kill on the Imp was probably cut/unused because it does not fit the themes/mechanics/etc in the final game. Either that, or some devs made it as a test or for a bit of fun. But the animation is fully functional (and pretty cool), which is why I have included it. I should also note that I added the lightning/energy effects, and that they're not part of the vanilla animation.

The Prowler's front above multiplayer glory kill was given to the Imp because the works with the Imp model. I suspect this is because the Prowler uses the same skeleton as the Imp, just scaled up. However, since the Prowler is larger, its animations won't look right on the Imp. For the front above glory kill, I was able to work around this by scaling up/down the Imp and Slayer during the animation. Unfortunately, this "fix" does not help with the rest of animations, as they still have severe alignment and/or clipping issues, so I was not able to include them.

Like with the Imp and Prowler, the Summoner and Harvester seem to have the same skeleton too. Fortunately, there appears to be no size difference between the two, so the Harvester's animations more or less work "out of the box" with the Summoner. But unfortunately, the back glory kills rely on a gore model that is a gibbed version of the Harvester body. It would be very jarring to kill a Summoner, only to see a gibbed Harvester body appear, so that animation was skipped. The left side animation is the "two torso punches" one that is seen with the Soldier, and is pretty lacklustre IMO, so it was skipped too. Lastly, the right side animation is identical to the Summoner's right side glory kill, so it was skipped as well.

The cut/unused chest armour rip animation on the Hellified Soldier is actually meant to be a grenade kill (its state is called kill_front_grenade). My guess is that originally, the Slayer would pull the pin on a grenade strapped to the Soldier, then kick them away, with the Soldier exploding shortly after. Aside from the corpse explosion, the sound events for the pin being pulled, the grenade being activated, and the grenade's warning indicator beeping, don't work. On top of that, there is no grenade attached to the Soldier in the first place. I could try adding one, but where the grenade should be would actually have it clipping into the Soldier's chest armour plate. This leads me to believe that this animation was meant for an earlier version of the Soldier, and was cut when their model was changed. Coincidentally, with the new Soldier model, the pin pulling animation looks like the Slayer is grabbing their chest armour and pulling it instead. By adding a chest_hole gore event, I was able to create the illusion that the Slayer is ripping the chest armour off (which looks to be fused with the Soldier's flesh), thereby also ripping away parts of their flesh, creating a hole in their chest. The kick was left in, as it still matches other glory kills where the Slayer kicks away the dead body. Lastly, I disabled the corpse explosion and associated sounds, as that would obviously not fit the new function of the animation.