When you start the level, pick up ALL weapons and ALL ammo in this room. ----- Level 28: The Absolution ----- Congratulations, you've made it to the final level on Doom 64 (and yes, it does skip 3 levels, as Levels 25, 26 and 27 are Fun levels)! The level introduces nukage for the first time along with the radiation shield which appears as a bio-hazard sign instead of an actual radiation suit. The level is where new weapons technology is researched, and creatures are kept for study, however they have undoubtedly escaped. MAP07: Research Lab is the seventh level of Doom 64. For DOOM 64 on the Nintendo 64, GameFAQs has 164 cheat codes and secrets.