Outside that other negative reviewers had said about RNG factor, it also has annoyingly long runs of few hours. I could be okay if I could complete a full run within an hour, but for such heavy RNG rogue like, matches take way too long and deaths feels often cheap. It is a good game to pick it up regardless on sale even if you agree on these points, since novelty alone will carry this game for you, but I personally really do not like game which is unfair and forces me to loose all my progress on few hour basis and later spawns me in screwed up position in order to try and salvage a hopeless situation. This game does not respect your time and you have to go with such mentality. This is terrible game if you value your time and need guaranteed enjoynment from your game.
Edit: In addition, this game is heavily over-tuned due to being developed by devs and played by players way too long. There are too many sectors which you have to go through and when eventually you reach the end. You have to fight same boss fight without any repairs or resupplies 3 whole times! It is cheap stage after stage and it feels like over-tuned. It is no surprise that most people rarely ever complete campaign even on easy.
Edit: In addition, this game is heavily over-tuned due to being developed by devs and played by players way too long. There are too many sectors which you have to go through and when eventually you reach the end. You have to fight same boss fight without any repairs or resupplies 3 whole times! It is cheap stage after stage and it feels like over-tuned. It is no surprise that most people rarely ever complete campaign even on easy.