We've released a new update for the game which fixes some bugs and makes a few tweaks:

BUG FIXES:
-Episode 2 final boss no longer goes out of bounds
-Password entry now possible while playing with a controller (though it still requires a keyboard)
-The second-to-last boss of episode 3 no longer behaves even close to as buggy upon dying
-Delta's second stage in episode 2 said you could press jump when using keyboard controls when it specifically meant space-bar
-Restarting the custom gauntlet with a controller used weird, unintentional button mapping
-A certain easter-egg no longer causes a music bug if you exit the character select screen

CHANGES:
-You can now exit full-screen during gameplay using the F11 key, note that this only works during gameplay and not on menus or during cutscenes etc.
-You can now change volume under settings
-The second-to-last boss of episode 2 now conveys itself a bit better