New Genetic Genes/Powers

[BaneOfGiygas]

Beneficial:

Keretin Claws: Changes your punches to slashes. Probably no additional combat bonus.
Maybe if you want to go over the top you could add an option for metal claws, via chemistry and genetics. e.g Right chemical injection + right mutation = cool better mutation.

Metal foam + ??? + keretin claws = metal claws. Although the wolverine treatment should not be easy to survive.

Actually, maybe the punches deal less actual brute damage but make people start bleeding. About the same effect as shanking someone with a common bladed weapon (glass shards, scalpels, etc.) but bound to your hand(s).