arrow keys to move or WASD space to shoot bullets in battles X to reload O for a bone attack P for a bone attack I, U, Y, R, K, E, T, L, for spike attack B for Bullet Hell Attack V for Circle Spike Attack H for Blue heart (gravity towards ground) J for Red heart (no gravity) G for Purple heart (gravity towards roof) F for Orange heart (gravity towards right wall) M for Yellow Heart (gravity towards left wall) N for Green Heart (shield)
I used 1 Griffpatch tutorial on smooth movement. Check the code out if you wish but it lags a lot.