Originally posted by Urban Blackbear:

Yes, the controls are fully mapped and work well. There are even button combinations for splitting stacks of items and dropping them from the inventory. The only thing is missing is a in-game popup keyboard. I don't know if the Steam Big Picture mode onscreen keyboard works because I've never tried though.

The controls suck ♥♥♥♥♥♥♥ ass the attack buttons force swap no matter what config you load