Tools like hammer and screwdriver are working as melee weapons. Equip it in your hands and press space to put your hands up. But they don't seem to work when you have your hands down.. I guess the animation isn't done yet. 2) These are not the final animations. As far as I know they are planning to make the animations right-handed too. 3) The game isn't balanced well at the moment, but I guess the devs are aware of this problem.

seems like someone posted this already

oh my fault, sorry guys

Upvoted the other report Illiad. I didn't know that mouse buttons are hard coded so thanks for the info. I really hope they allow us to change them in future