I played until I died twice. Here are my thoughts:

Pros:

• The theme is pretty unique, a beat'em up in a post apocalyptic world where you are helped by monsters;
• The music fits the theme;
• The eggs can add a nice layer of options;
• I like how it is a beat'em up game but combat is ranged. I don't remember seeing a game where this is the main mechanic.

Cons:

• The main thing to improve is the speed of the game. Your walk speed starts very slow, your attack animation has a lot of frames both before and after shooting, and the enemies take too much hits before dying. A game that has bulky enemies is just much harder to design. Think of it this way: a goomba is extremely simple, but works. A bulky enemy (like a boss or mini-boss) has to have much more complex behavior to keep you engaged for the time it takes to defeat them;
• The graphics are colorful (lots of blue, red, and green on the characters), but at the same time it is a bit desaturated, wich I find a bit contradictory.