I liked it a lot, but I have no confidence it's ever getting finished. For better or worse, the game's character design is excellent, and that alone has propelled its popularity and made it anime worthy.
The game is loosely in the souls-like genre. Lots of exploration, secret areas, and collecting items and upgrades, combat plays sort of like a magic build in a souls-like but with a nice parry mechanic to keep your mana high and keep your spells flying, and enemies hit pretty hard, you lose currency when you die, and you respawn at bonfires. So, again, kinda in the genre.
The part I enjoyed the most was playing with the magic. Each spell has two forms: the first being a simple, low cost, plinking shot (save for the electric spell, which is more like a sniper shot), and the second being a unique charged up version of that spell. Normal spell turns into a huge blast that penetrates enemies, fire is a shotgun, ice is a multitarget lock-on, and electric is a massive AoE strike. As well, once you've charged up any magic, but before you've fired it, you'll gain some melee bonuses: fire gets extended range and damage, ice provides a bunch of extra armor, and electric puts you into bullet time (and I forget what normal does). There's also wind and counter magic, but those are the just the fancy names for your double jump and parry. Oh, in a few cases, you can get hit by your own magic, like not choosing any target with the ice attack will cast a random blizzard of ice spikes around you, and the electric attack is huge and would be easy to cast on yourself.
Parrying is pretty broken, and once you learn the timing for it, you have basically an unlimited source of health and mana. If you parry before taking any sort of enemy damage, you negate all damage, you get back a little health, a bunch of mana, and if you do it while charging a spell, a big chunk of the charge time is skipped over, usually leading to instant charges. Doing the parry in a group of enemies can be tricky, but against single enemies or bosses, it becomes a question of how hard you want to style on them. You'll basically jump in the way of their attacks, instantly charge a spell, and blast it in their face, and if you're good, you'll pull it off multiple times in a single enemy attack cycle.
Steam says it's $10 right now, and that seems about fair. If you want a game with lolis and mage combat, it's pretty excellent. But do go in knowing that it is likely never going to be finished.