I tried KF2 for a while and really couldn't get into it. The game just lacks replayability in my opinion. Trying different perks, maps, difficulties, etc. really didn't resonate with me because I felt like I was doing basically the same thing, just kiting around enemies in a predictable loop. There was a serious absence of memorable moments, unlike with other horde shooters like l4d and even b4b. Sunk a few dozen hours into it and it kinda feels like a waste in hindsight, never really enjoyed it and spent the whole time trying to.