I enjoyed trying this out, but there were two things that could've made it better.
1. At first, I was excited to see that the game seemed to be preoccupied with having a keyboard and mouse layout. Usually when that happens, it's a sign that the game will not interfere with JoyToKey software, making the game likely to work well with gun controllers. However, the game does actually impose two controls (movement and firing) on controllers, so it doesn't have a completely clean relationship with JoyToKey.
2. The keyboard/mouse control list is not complete. You also need the E key, yet that's not mentioned above.