Boring and not very well designed. There's precisely one perk that matters, it's "crits have a chance to heal you", and when you get that, you win. The levels are mostly really easy, even on ascension 6 (max difficulty), except for Hell and the snow level, which are frustrating and annoying without the aforementioned crit healing perk. However, they wouldn't be that annoying regardless, if the game was better designed. 99% of the difficulty of the game is being able to see enemies and projectiles, which are completely obscured by any explosions/skybeams you are causing. Visibility is the only real enemy in this game. For some reason, devs often think it's a good idea to have really bright and noticeable projectiles for the ones that you fire, and indistinct barely visible ones for the enemies' projectiles. This should, very very obviously, be the other way around. Some maps in particular are much worse, with enemy projectiles nearly invisible and/or completely obscured by all of your projectiles. You can't even really see your level-up bar because of the choices in color/lighting, unless explosions happen behind it. Super annoying. None of the character or weapon differences matter much, because again, the only perk that really truly matters is the crit healing one. You can still win without it on the hardest maps, but it's just 10x more annoying.
However, it's cheap, and mercifully short, and it doesn't have god-awful achievement design like the vast majority of this entire genre of low-effort arcade survival style games that people pretend started with Vampire Survivors. No, they're just arcade games; they've been around since the early 80s, and, arguably, the late 70s.
I should note, my issues are compounded by using the fire/explosive weapon, because it's simply the best weapon. However, the electric weapon (which sucks, and is the exact same looking as some enemy projectiles, also making it very confusing) and initial weapon (which has dark black projectiles that also obscure things) both cause visibility issues as well (and aren't as good.... and since explosions combo with so many perks, you will most likely take the explosive perk anyway when it comes up, to use all the other perks that need explosives to work).
The mini-bosses/bosses are a complete joke and afterthought, and get mowed down in 1-2 seconds with most builds. Sometimes the first or second minibosses take longer because your attacks aren't strong enough, but I've yet to see a stage-end boss that survived longer than moments, often dying before it moves/attacks.
There are also technical glitches, like the music constantly cutting out, the more projectiles/explosions are happening, which is a shame, because it's probably the best part of the game. A little generic, and at least one track's motif is very obviously almost note-for-note a track from Final Fantasy Tactics, but, there's worse music to copy. I do like the artstyle though, shame the game isn't more fun.
