The insanity.map file you have requested: Modifications / Halo Trial Mods / Insanity Mod / Insanity - 13.79mb 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:
Complete mayhem; every weapon has unlimited ammo, can zoom in, and most of them fire nukes. There are a lot of other mods but I'll let you figure them out yourself.