It’s time for the first post-jam patch. Changes:

Wall Power Up: Added Push effect, pushing all nearby enemies a very short distance away.
Audio Control: You can now adjust the volume of the music. Mute the sound, reduce the volume a bit - or blast it out of your speakers!
Spawning Mechanics: Two enemies will no longer spawn so that they overlap.

Known issues:

The mouse can travel outside of the playing area. This requires a rework of the control system, so expect that to be fixed in Version 1.2.