Wow... just wow...
Truth be told, I wasn't expecting much. I mean, I had free time, this game had a small file size so I can download it quickly despite my net, so I figured, why not? And why not indeed! I was blown away, figuratively AND literally at the later part of the game.
It's just quick, fun, mindless thrill. The action is frantic, bullets can fill up the screen if you don't get rid of the enemies quick. Shoot them down before they shoot you! Outrun the enemy bullets, weave through them. Much akin to a bullet hell game, your hit spot is tiny, and you can maneuver through the enemy bullets... if you're careful! Precision is the key here. I would categorize this game as bullet hell meets Zelda. Old Zelda... think Link to the Past, etc.
The upgrade system is rather unique too... instead of upgrades being available and purchasable the moment you have the cash to afford it (in other words, jut grind money), there's 3 different types of upgrades.
First one is monster-based. Each monster offers their own unique upgrade badge that you can buy once you get a card off them (low chance drop) AND killed enough of them to fill your "Knowledge meter" of them. Once both conditions are fulfilled, you can see what badge they offer and whether you wanna buy it... this is where cash comes in. It's a bit of a grind, especially because of how many you need to kill and the low chance of card drop, but hey, it makes each monster unique, even the lowly slime.
The second system is via unique coins called Sweezy Coins (what else?) and once again, cold hard cash. They're scattered throughout the world, some needing later upgrades before you can reach them. Getting a certain amount of them unlock upgrades you can purchase from the many shops you pass throughout the world.
Last but not least, there's heart containers (hello, Zelda fans). Getting 4 will increase your heart total by 1, and just like Sweezy Coins, they're scattered throughout the world and yes, just like the above, you'll need later upgrades before you can reach some of them.
Brace for action, get ready to dodge bullets, be prepared to kill enemies quick, and most importantly, have a hella good time. And oh, die a lot of times too while at it.