It's part of the issue. Your is split evenly between , , and if you have those types. Say you have 60. Your melee damage is 1. Dredmor has 30, so you would deal 31 to Dred. 30 is nullified. Now, you have 60 with a melee damage of 1 1 1. Dredmor has 30. acts as one point of each. You deal a grand total of zero damage to Dred. 21, 21, and 21 are nullified.