Y button spams attack, D-Pad can be used to navigate menus. Xbox 360 You will still need to fire special weapons manually.
Gamepad Inputs
Simply touch to Kill! Generic Controller 6 days
combined playtime Touch RightCirclePad* to fire, press to use special weapon. LeftCirclePad/Joystick to steer.
Invisible Gamepad 3.0 Generic Controller about 2 hours
combined playtime dpad and face buttons mapped to touch pads.