I would say, just go watch videos of it. You can get enough info that way.
Other than that, yeah, only a couple of us here have actually tried it, and I suppose it depends on if your own tastes are similar to that person.
My own tastes/interests seem to very rarely match that of anyone else, so my own thoughts aren't usually very useful on matters like this.
That being said... yeah, I really cant over-exaggerate my hatred for this game. I did in fact refund it. First time I've ever done that. Good riddance.
And that's my opinion of THAT one.
I will say this: If you don't already have something like, say, Nuclear Throne instead.... go buy that. There's that game, and plenty of others, that do all the things in this one, but better than this one does.
...except the fast travel system. That was the ONE thing I thought this game got right. Too bad it's the most useless though.
Though, Nuclear Throne doesn't NEED a fast travel system...
As for Steam's approval ratings, well... I personally always ignore them. People rate AAA games super highly, so... yeah, I ignore them. Really, videos (not video REVIEWS) are probably the best way to see how a game really plays, rather than just looking at Steam reviews or Steam's super-arbitrary rating thing.