The connecting power ups was kind of neat, though I couldn't figure out what the did really (were they just a shield).

Like other people have said, speeding up the game would help it out, as would having either a charge shot or just having the character shoot all the time. Obviously additional powerups would be interesting as well.

One time my WASD controls just sort of stopped working and also at some point connected to an enemy powerup through my regular powerup. But I'm not going to fault a game made in 2 days for having glitches.

Anyway, good job and congrats on finishing!

That's a fun one. I suggest making it so you don't have to hold down the whole time. There's not really any reason to not shoot, so it should just shoot all the time. But other than that I enjoyed this one for sure.

Oh, and I would also suggest faster player movement. As a general rule of thumb for games like this, faster and snappier = more fun (to a point obviously).

Cute! I enjoyed it but wished I could move faster to encourage more reckless/challenging gameplay! 

Really cool concept, although some kind of real tutorial on what the upgrades do would've been nice, also, don't feel afraid to speed up your game, making it like 4x faster would benefit this greatly. Overall really nice submission :)

Nice idea on powerup attaching mechanics. As for the downsides I'd say, would be awesome make overall gameplay more responsive and juicy. But anyway, congratulations on this.

P.S. I think you should to put some info on the game page about the process of making the game or the idea behind it.