Collect the orbs to unlock the door and escape! Use the Arrow Keys or WASD to move and jump. To activate the door, collect all the black orbs.

In later levels, you'll be able to double jump. You can press W or UP twice to double jump. However, you only have a limited amount of chances to do this, indicated by the JUMP counter in the upper left corner of the screen.

Make sure you avoid the spikes!