Really cool! You two did a great job!
I did find this one problem(I'm assuming it wasn't supposed to happen). I died on the upgrade screen.
But as long as you click fast on the upgrade you want, it's fine.
Also, I get the slow motion effect, it's really cool, and I like it a lot, I just feel it's a little... late. But if it was just a little sooner, I think it would be magnificent!
No matter what, you two finished this in 72 hours, and that is a great accomplishment. So little things like that aren't really too bothersome.