Nice entry! The dialogue was really funny, and you did a good job of making increasingly difficult and complex tasks from simple mechanics. I appreciate that you didn't need to collect *every* pickup for each level, so you could move on if a challenge felt too tough, but it still keeps track of how many you do so you can gloat to your friends.
The music was pretty simple, but I really like how the tracks layered on as you progressed. Little touches like those make a big difference.
The fixed camera angle was a nice touch, and made it impossible to get lost (just move up), but it was sometimes a little difficult to tell what height a block was at (especially when it's floating off in space). Not sure what you could have done differently there, though.
Overall, really solid entry!