Kinda mediocre, has something to it's aesthetic (the UI theme/tone) and it's basic mechanics but it doesn't really develop things past a point, I felt very quickly like I was on the "now do what you've been doing over and over until you run out of missions" about 2-3 hours in, the 'quests' are the most basic quests that can exist in video games, and that's about all there is to the game.
There's something there though even if it's just hinted at. If you're the kinda person that would enjoy a top down action shooter like diablo and if mediocre isn't a swear word to you then this definitely can have some value. To me this feels similar to State of Decay though for that game it's a lot more developed and it's inherit systems in a sandbox open world is a bit more compelling than "diablo game on a tiny island with like 3 types of zombies... forever". Just feels underdeveloped overall, would love to see this do ok for the studio and for them to make a more fully featured game with similar mechanics.