I'm gonna be honest here.
At first, I thought this looked like a promising, good game.
But then I played it.
The music and controls are pretty good (jumping is a bit iffy sometimes, especially with the gaps), but the waves kill it.
By the time I get enough money to build a small shack, there are already a decent amount of enemies coming at me. It's hard to build one when you have to move every two seconds.
Not only that, but from the tutorial, you said nothing about how you must hold down in so you can build a shack. I clicked to build a small shack and sat there, walking around, not knowing that I had to hold down to do it. Same goes with the tubes that make you go upwards and downwards to different levels, I didn't know you could do that until my second time playing.
The huge robots that fly down and shoot beams of energy are way too overpowered for the first couple rounds. It easily took down a majority of my life as well as killing my allies. There's nearly no way to dodge it. If it's in the right position, standing in place or jumping will get you hurt, and it will drain your health fast. I feel like it should at least do less damage or something.
I found myself losing far before I even got to build more than one building, and there was no way to stop it. I dunno if it just so happened to be the two rounds I've played or not, but the enemies spawned like crazy, making it to where I couldn't do anything except run from them, and even when I do that, there were tons behind me.
I gave 3 stars and a 3, only because I feel like this game could be a lot better than it is. As of now, the music, spriting, controls, and ideas are the only thing going for it, in my opinion.
Could have been done better, but hey, it's better than anything I could do.