Most of the weapons include tertiary functions (also called "Weapon Specials").
Expanded weapon arsenal, featuring over twice as many weapons than in Brutal Doom (v20), and some of them inspired by Quake and Duke Nukem games.
Tier IV: levels 21-30 (and secret ones) By default, the spawn progression follows Doom 2's "episodes", and accordingly, it is divided into four "Tiers": The exact active actors can be switched in the mod's options.
Dynamic spawn system, affecting what monsters, weapons and items you will encounter.