This mod turns every enemy into Tartarus. Allies are unchanged, and enemy factions have made up their differences and don't attack each other so they only kill you :D (No enemy infighting).

The one major modification I did is remove Tartarus' invincibility shield. Outside of the final level I just couldn't kill them at all, beam rifle or no, so I just removed his invincibility. He still takes plenty of shots to kill anyway.

The first level has a beam rifle that I used for testing the invincibility. I forgot it was there before I uploaded the file here, and am too lazy to go remove it, so enjoy a free beam rifle at the start of the first level :)

The final boss encounter will crash, or at least it always did on my machine.

MANUAL INSTALLATION INSTRUCTIONS:

1. Move all of your vanilla maps to a safe backup location. Maps are found in C:\Program Files (x86)\Steam\steamapps\common\Halo The Master Chief Collection\halo2\h2_maps_win64_dx11. Back up your vanilla map files, the map files that have changed are every file from 01b_spacestation.map to 08b_deltacontrol.map.

2. Unzip the modded map files, and place them into where the vanilla maps used to be.

3. Whenever you want to play the modded maps, just make sure you open the game with anti-cheat disabled. Have fun!