Simple but fun concept! I do wish that the keyboard controls can also be shown in the game as well and not just the gamepad controls, but I was able to figure it out completely and I was able to reach around wave 10. Good job!
it is strange that you didn’t see them as it should show you the inputs based on you selection method on the how screen. The controls page will swap based on you input, or at least that is what it is supposed to do. Really glad you enjoyed the game though