The First.zip file you have requested: Maps Levels Missions / Miscellaneous / E to F Titles / B30 Modded Map File - 14.9mb 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:
Make Sure You change file to b30.mapB30 modded map file This map includes a modified halo demo map which includes a machine gun bazooka, sniper pistol, higher jumping, climb walls, immune to falling, faster wart hog and more. READ ALL OF THE DESCRIPTION!!!!!!!! A modified map for Halo demo.