The Bloogulch2.zip file you have requested: Maps Levels Missions / Bloodgulch Maps / Ai Gulch - Just Download it - 8.57mb is not available. Perhaps try browsing all files for the game Halo: Combat Evolved and upload any files you want to share or are missing. This is the only information we could locate:
AI mod For Halo PC not CE. There are some new models for the weapons and hunters have a new weapon too.