meh
Well I played through the whole game and beat it. After you're about 3/4 of the way through you get enough points to make your gun powerful enough so that nothing is really a challenge. I could offer advice here, but it's easy enough to figure out.
It's an alright game, but incredibly boring. Basically no variation between levels, but for somer eason I still sat here for HOURS to beat it. The last level alone took me half an hour.
Go paly Gemcraft instead. It's better than this one.