The ideas for the different robot types was well balanced and I liked the enemy ideas.  They all seemed like they would be fairly useful in a level.  The level design could use a lot of work though.  Everything seemed thrown at the player at once and there were a lot of time when I couldn't see an enemy until it was too late.

I think you have a lot of interesting things going here. the attacks are fun and the player gets a lot of powers. My main concern is pacing: a lot happens right at the beginning, maybe the player could unlock stuff little by little.

Also, I had a few issues: enemies that you don't see that shoot you from outside the screen are a bit frustrating, also I was paused when I got a USB and while the message was displayed I couldn't move, but enemies could still hurt me.

There is a lot of cool ideas here and I think it's worth to keep exploring them! Good job!

Cute graphics and a fun concept ;)

It was a lot of fun playing around with the different mechanics of robo's forms (treads was definitely my favorite!)  My biggest problem was with the control scheme; my fingers kept getting mixed up! With a game boy in mind, I feel quick actions like jump and shoot should always be close to each other, like mapping them to (a)Z and (b)X respectively. Then, the more technical actions of form changing and weapon swapping could be mapped to (start) Enter and (select)Shift. Also, getting shot at by objects that are not in your current view is always frustrating.