I like this game!
How you switch between 2 different play modes.
The voice acting by the doofenshmirtz-like scientist.
The artwork, especially in the lab with the cute robot.
I found the grappling hook to be hard to manoeuvrer with and the aiming with gung would be cool if you could see the bullet paths as well as an "auto switch to available weapon" would be cool, because as far as I can tell all weapons are currently base on just shooting the enemies down with whatever gun currently available, which makes manual switching a bit annoying.
Otherwise a super cool entry, had a lot of fun playing this game!