Same as in the original game: Left/Right Arrow Keys to Walk; Up Arrow to Jump Down Arrow to Crouch; Down Arrow in Mid-Air to Ground-Pound Down Arrow + Up Arrow to Long-jump Jump, Groundpound, then while in midair, press Y to Dive Y to Throw Cappy Y to Return to Normal After Capturing Something (You can't uncapture if you're close to a wall) Go Down Pipe: Stand on top of the pipe, then press Down Open a Door: Throw your hat at it to open it, then press Up to enter.
Curse (thanks to FunnyAnimatorJimTV)