Some of them I don’t mind. They’re challenging, but not impossible. You can tranq the monster with Val from 60m away fairly easily. On the other hand it is just annoying to need to get 50 revives with Slim’s healing bug. It takes no mastery to throw the bug at someone, you just have to hope your teammates A. go down and B. don’t revive the guy before your bug can, even with you telling them to leave him alone.
I would almost rather spend 5 bucks and be done than play 50 matches hoping I can get one revive in each.