The monsters on
Dungeon Levels 5–6 may deal more damage on average, but
Dungeon Levels 7–8 are almost as dangerous. The
Tangler dishes out the most damage of anything in the game, and
Gremlins will steal half of your
Food per hit, costing you money even if they don't kill you. The rest of the monsters all do standard "max damage," which can range up as high as 255.