Wait... so the enemies are all bright PINK?!

...now THAT'S an interesting design choice.

I received a bug report via Twitter today regarding this shader issue. This was unfortunately an old bug that somehow managed to work its way back into a build. I've now corrected this and uploaded an update. You'll know you're on the correct version if you see "Build -10-" on the title screen.

Apologies for the issue. That looked crap.