Wow. This entry has a lot of character. It is obvious to see that there was a thorough design process.
The pixel art is detailed, the characters feel alive, there is a comedic script, and even a bonus level at the end. Truly a wonderful experience and a great entry!
One critique I have is that the upgrades don't feel impactful enough. Maybe the sand in eyes trick helps a little bit I got by just fine without using any active abilities. Same goes for Adam's upgrades, the extra health just means the fight lasts a bit longer because he has to do more attacks.