Fun little platformer.
I like the shield mechanics to clock enemy shots and the game has a very endeering artstyle that sorta reminds me of old flash games like the ones i played on Newgrounds back in the day, for some reason your smiling little mechs made me think of a mix between Kirby and Fantasy zone :p
I just feel the jumping fells a bit too stiff to use, thankfully you made a jetpack when holding the key but i ended up relying quite a lot on it to compensate for how odd the regular jump is.
Other than that it was a nice little game, you both did good :)