Instructions in the project - WASD or the arrow keys to move, and space to jump.
Everything's the same as vanilla OCT with one exception. You start with 3 lives. Your current life count is displayed in the top left corner. If it ever hits 0, it's game over. Restart from level 1. Have fun, or don't. OCT created and owned by 4d9r. Fun fact: I made this in 10 minutes.