Holy crap fully voice acted, and the voice acting is actually good? The graphics and the sound were both excellent especially for a jam game.
I think the 'tutorial' could have been a bit longer, because as it stands it just sort of ends abruptly and expects you to figure out that you can keep building things and you gotta' remember, people like me are stupid and forget things like that. Tool tips for suggested actions that appear after a certain amount of time if the character hasn't done them might be useful.
I encountered a bug where I guess one of the AI died, and after we killed the last enemy the game didn't realize they were all dead so it just sat there. I started walking to the south which seems to go for infinity (I'd probably add an instadeath out there) before giving up. It would be neat if you could control the AI and upgrade them as well. Ooh, and instead of tool tips you could have the AI make suggestions.