Strategy:Cerberus armor
From DoomRL Wiki
Perhaps counterintuitively the bullet, shrapnel and melee resistance of the original armour are preserved. Thus the best standard armor to use for the Cerberus armor assembly is green armor. The best exotic armors to base it on are Gothic armor (200% durability, 50% each bullet, shrapnel, melee resistance) and Onyx armor (indestructible).