Just for train your aim, don't expect a great shoot'em up game, but use it and your aim will be better on that games.

Set position of the controller and buttons on the screen.
Set controller sensitivity / deadzone to make it match with your game console settings.
Connect your controller, most of them are supported.
Bind every key/joystick/axis at your choice, as in your favorite shooter game.

So you can play with or withour controller.

Train your aim in 5 rounds where difficulty will increase.
Clear all enemies: zombies and vampires.
Every elimination you do give you 1.5 secs.
Find an item will give you 2 extra secs and will increase your final score.
The faster you finish the better score you get.
Train every day and your aim will be better on all first person games.
Don't forget to submit your score and compare with other players.

SUPPORTED CONTROLLERS:
DualShock 4/3/2/1 (PlayStation controllers). These controllers work out of the box.
PS4, PS3 Controller.

Xbox 360 Controller. This controller requires a 360Controller driver.
Xbox One Controller. This controller requires the Xone-OSX driver.

Various Logitech/generic PC game controllers which all tested without issues.

Tested with controllers connected via bluetooth