To Install: Go to C:\Program Files (x86)\Steam\steamapps\common\Halo The Master Chief Collection\halo3\maps

Back up the "020_base" file there, then replace it with the one from this mod.

Start the game with anti-cheat OFF.

Select the level "Crow's nest" from mission start, with whatever difficulty or skuls you'd like!

Enjoy!

I wonder who will be the first person to find the secret skull during the boss fight? :D

Credit to Calantorn for the Brute, grunt and hunter models!