I bought this game a few years ago, played it for an hour and then stopped. I decided today to stop and replay to see if the game was really as boring as it once seemed.
Unfortunately yes, the game does not have a very good replay factor, you need to play several runs to progress in a very boring system to unlock cards and a few passive improvements, there are few bosses and there are many enemies with a variety that is interesting, but in the middle of all this mess it becomes very frustrating to play.

A really disappointing game