Pesky Pixies:

Use the arrow keys to move. Use the ctrl key to shoot. There is one invincible pixie. Don't let him get you.

Rogue Bludger:

Move around and try to avoid the bludger. Use the arrow keys.

Chaser:

Use the up and down arrow keys to move vertically. You cannot move horizontally. Try to get the quaffle past the keeper.

Use the ctrl key to shoot.