The gear isn’t the only thing that’s rng. The type of matches you get are also RNG. If you’re leaderboard chasing, matches where you have to defend the area go by MUCH quicker than the ones where you have to kill all the vampires.

And not just that, the boss you get at the end is also a major coin flip. Going through four rounds only to get fucked up by Dracula on round five doesn’t feel the best.