Play Button - Takes you to the furthest level (For example if you've done 2 but not 3 it will take you to 2. Menu Button - Takes you to the screen that shows all the levels. WAD/Arrow Keys - Moves the player, W and Up Arrows are jump, while Left Arrow, Right Arrow, A key, and D key are left and right. Diamonds - Try to collect them all! Keys - unlock doors. Flashlight - Press E to toggle it, the flashlights battery is shown by how big the light is.
@Griffpatch, for the platformer tutorials and enemy movement. I bet GingusV2 can't beat it.