I picked up Killing Floor Incursion.
So far my impressions are soso. Doesn't hit you with that same strong first impression as Arizona Sunshine at all. Instead there's an overly long forced tutorial. (I'm going to be making a lot of comparisons to other games, but that's where my thinking is right now)
Storytelling is hokey at best. More nonsensical than usual. I really don't think they spent any serious time writing for the game. It's intentionally silly and loose, but in a way we've seen in a lot of games before. I'm not finding the clever wit that Killing Floor 2 had yet either. Wish they would have stripped it all out, at least so far. Takes away from the game.
Graphics are just OK. Not as nice as Arizona Sunshine by far (but I've only been in a few areas). The zombie designs are probably the creepiest I've seen in a game, so that part is really strong.
Gameplay so far kinda trickles enemies out at you and then will throw a larger number of tougher enemies. Doesn't give that same Arizona Sunshine feel of the waves of zombies (that Left 4 Dead and Dead Rising also did so well). Not KF2-like either seemingly. Lots of respawning enemies (or rather, zombies that just spawn in with a "VR style", they can even spawn right in front of you), enemies wander about and head towards you, they don't mill about like in the before mentioned games. Gunplay is looser than Arizona Sunshine, maybe even looser than Robo Recall, so making a headshot doesn't feel rewarding, but it's not terrible in this way either. One of my biggest challenges so far is actually finding where my holsters are, but maybe that's because I manually chose waist level when chest holsters is default. I'll definitely switch it back next time I go in.
Strongest impression is the sound. They did really well here. Some of the best (traditional) sound design I've heard. Gunshots feel much more powerful than other games (still not lifelike of course). I really like the ambient sounds though. Goes a really long way. Voice acting is completely forgettable, but not a Dead Effect 2 level of garbage.
Finally, I've already ran into a fair amount of glitches. The most severe made me quit. My grip was glitched up so I was holding a handgun but it was facing backwards (comically so), and the game wouldn't let me drop it. I couldn't even use the in-game menus because of this. Couldn't fire. Basically a softlock. Not good.
To bring it back to Killing Floor series, KF2 feels a lot more satisfying, but these are still my first impressions. If anything I'd say it feels more like Resident Evil 7 in the way you move and the environment (first real level), not in the pacing or fidelity. (Haven't played RE7 VR).
I'll go back to it, but I'm not in a huge rush to do so. Oh well. Pretty early first impressions, so I do hope it picks up.
Oh yeah, the game is definitely a little scary, unlike all of the above mentioned games. I mean I find spring peepers and a forest at night relaxing, but even still those zombies are creepy.