It took me a while to figure out what I'm supposed to do. Even while looking at the instructions on the second screen. It's just too confusing. 

The mechanic of grabbing robot parts, hacking them and giving them back to the robot unnoticed is pretty cool. Unfortunately, it's too hard. I found myself moving the hook back and forth just so it won't swing because it's impossible to grab the guns unless the hook is hanging straight. 

Adjust the difficulty and introduce the controls gradually via tutorial levels and it might be a pretty fun game