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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).
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3.10 UAC-30 Designated Marksman Rifle (Slot 4).3.8 Sawed-Off Double Barrel Shotgun/Quad Barrel Shotgun (Slot 3).
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