It;s not bad but for 10€ there is a big lack of content here.

1 Boss
3 Maps
~ 10 spells

That's it....

No spell evolutions or spell combinations, you can only add an element that doesn't change anything
No Mini-bosses, no elites, no different types of enemys and ontop of that the same enemys on every map...
Upgrades and relics are almost all stat based and do almost nothing
Only "special" upgrades are healing and splitting

I've done 6 runs, the first 2 were nice, the next 4 felt exectly the same.
And the infinit balancing after the first boss, wow that's bad

I'm not really a survivor fan but i could name 3 survivor games with 5x the content and cheaper at the top of my head.
The only real thing this game has going for it is the co-op but if you'r looking for a survivor type game to play alone or for longer than a few hours, this isn't it.
But if you're looking to play a very simple game for a few hours, maybe.

Müsst ihr wissen.

Great for solo and coop expirience!

rune blast go brr