Man, do not try playing this game on a keyboard lol. It was 100% not made for it and SEGA made no attempt to make it work. Literally all the mouse does is allow you to move your character by clicking and holding. No camera control to speak of. You move with WASD and use the arrow keys to attack, that's it. In addition, there is no lock-on so WASD does not give you enough granularity to accurately attack things like a joystick would.