Kudos on intuitive gameplay mechanics, it felt alot like "The lost vikings" and "Thomas was alone". Ability to switch to WASD controls in addition of arrow keys would be good for those who aren't used to arrow keys, gave me a hard time for a bit.
Encountered a bug, whenever you're in a level and press ALT it will load next level ontop of previous, sounds will overlap and so on until there's no levels, then this error pops up and game crashes: