Original and challenging
In General:
> Very original concept; Great music choice; Visually awesome; Addicting and fun; Challenging
> Perhaps too challenging especially when playing levels consecutively; Feels like it should be a "beatable" game, not a "get a hi-score" game; Wtf is "DNA mode +"?; Useless score bonus; Never-before-seen speed (and maybe other?) bonuses
In Nit-picky Details:
> I think you've successfully combined puzzle and shooter into a very exhilarating and visually appealing game that involves a bit of strategy as well. The music choice is great and the game itself is quite addicting. However, the game feels a little unbeatable when attempting all levels consecutively (or perhaps I just suck, haha~). But like holy crap, the disparity of difficulty between Level 3 and beyond is rather huge with the addition of a new colour block AND more enemy hordes. I guess that's why you made it so that you can choose your level, but then the only purpose of this game is to get a high score. For me, that's not nearly as satisfying as actually beating the game.
> Despite that, this challenge is what sets apart this game from others of its genre (if you can say it has a specific one). It isn't just all blast everything in sight nor is it mindless puzzles. For example, in Level 4, you have to be extra careful what you shoot since the enemies split as they are destroyed, hence the strategy aspect. However, in Level 5, things just start swarming at you from everywhere (damn homing enemies) and it becomes incredibly difficult to fend them off especially when my only two weapons are these dinky bullets and an electrical attack that can hurt yourself! It's hard enough as it is trying to dodge everything let alone being careful of where I use my lightning when I'm in a panic in addition to trying to fill up the gauge as fast as I can. It's a bit overwhelming for me. Maybe a difficulty setting would be nice? Or maybe another life? Full health at the end of levels? Health bonus to heal more?
> Ah yes, the bonuses. It would be nice to know what each of them does though most are self explanatory. But there's this one called "DNA mode +"; what the hell is that? And what is this "Macro Shot" thing I saw once in my score summary after a level? The most useless bonus to me is the "+200 score" since by the time you're at Level 4 or so, you've probably racked up over 10,000 points. It may be nicer to have a score multiplier instead as it's useful at any level. You mentioned a speed bonus but I have never encountered it once throughout the 10+ times I've played. Just how high of a combo do I need?
Overall it was very enjoyable (and frustrating.. in a good way) and I look forward to your future works!