I completed the game using keyboard and mouse and I mostly enjoyed it. Just be sure to rebind the keys from the start. I enjoyed everything about this game except the fixed camera. I knew the camera was going to be an issue, but it was not as bad as I thought it was going to be. You can look up the invincibilty cheat code if you want an easier experience. The hardest part of the game if chapter 8 due to Vorador's Manor being fillled with platforming sections. The storytelling of Defiance is for sure worth experiencing.