O shows the thumbnail, but stops progress, near the end of a battle? Don't press P. IT RESETS ALL YOUR STATS. Click flag 2-5 times before playing. If it doesn't look like it works,, click it a few more times. It's pretty self-explanatory. Move around (WASD/Arrow keys), dodge projectiles, press Z when the bar is on green to do most damage, and have fun overall.(If you can't click fight it's because you died, I can't seem to find the source of the glitch, sorry!) (If you can't move, click the screen. If that doesn't work restart.)
Credit to @FireStorm369
