
Extra power-up types and inventory items. Expanded monster roster, with most of the monster types having at least three other "variants" - alternate versions, of increasing threat level and various abilites. Few, selected weapons have "weapon upgrades" tied to them, which are their improved versions that replace the old weapons (but can be obtained without the base weapon in possession) and can be found only on Tier IV. 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. 3.28 Revenant Missile Launcher (Slot 9). 3.27 Mancubus Flame Cannon/Unmaker (Slot 9). 3.22 UAC Cryogenic Dispersion Rifle (Slot 7).
3.19 Special/Super Grenade Launcher (Slot 5).3.15 UAC-240 Perforator Nailgun (Slot 4).3.13 UAC-Mach-2 Minigun (Classic v20 Mode Only).3.11 UAC-41 Carbine/UAC-49 Light Machine Gun (Slot 4).3.10 UAC-30 Designated Marksman Rifle (Slot 4).3.8 Sawed-Off Double Barrel Shotgun/Quad Barrel Shotgun (Slot 3).