That was a surprisingly big two hours of work.

Changelog

• Music controls. Back (gamepad) or Right Alt (keyboard) to skip tracks. Hold + Tag and Dash to control music volume on the fly.
• Press Tag + Dash to center the camera behind your character.
• Low-res shadows fixed when AA is off.
• Effect tweak on enemy projectiles.
• Characters now have to be unlocked in Adventure to be playable in Challenge.
• Credits can now be ended on keyboard and mouse.