Thank you both for the feedback. Unfortunately I didn't have time to add a tutorial stage, but the controls are available on the game's information page:
Gamepad Controls (The Ideal)
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DPad - Movement and Aiming
X - Fire
A - Jump
R1 - Lock Movement to Fire in Place
Start - Restarts the Level
Select - Quits the Game
Keyboard Controls (Hey, It Exists!)
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WASD - Movement and Aiming
L - Fire
Spacebar - Jump
Right-Shift - Lock Movement to Fire in Place
Enter - Starts the Game (Only from Title Screen)
R - Restarts the Level
Escape - Quits the Game
Hopefully this helps! And thank you again for the positive comments. Incredibly kind of both of you!!!