This story is about a bug that happened to me today.
I was playing Valkyr and joined Defense mission on Mars, Olympus. It was wave 16. After i casted Hysteria and it's ended, strange thing happened: My melee attacks was doing by claws, not my scoliac whip, and they used hysteria claws attack animations but without glowing and lighting and "lazer-claws". I don't know why, but enemies did really low dmg to me + i regained my health by killing them as in hysteria mode and i was doing insane dmg to them( one-hitting all enemies with melee), but i only started my Valkir and it's just impossible. Here are some screenshots http://imgur.com/a/85HUB
Just reporting a bug. Sorry if did something wrong, first post on wiki.