TL;DR- I don't recommend playing it. If you do play it, only do it once. Maybe get a clear save so you can hop right into the Gallery, but that's it.
This has the bones of a decent game, but right now I just can't recommend it. Each of the 3 characters currently in the game play very different (Teacher has a far reaching jump but her dash attack isn't very responsive so getting grabbed midattack is easy, Gym teach has very powerful jump attack so she clears the area fast but her low attack has almost no range so attacking zombies while they're down is problematic and she has a bit of wind up on her dash, Cheerleader has lots of knock back and her dash attack has lots of range and is very responsive, but her normal has no range. Also her jump is extremely floaty so timing jump attacks is very simple, but she also can't move forward during her jump so she can't use it to avoid the low traps nor can she close the gap to use her jump attack offensively), but the lack of combos or anything of that nature means across 5 or so levels, their gimmicks wear thin very quickly. Once I got used to their gimmicks, I didn't find the game terribly difficult. Cheerleader is basically easy mode since she seems to be built for combat with her extremely responsive attacks. Gym teach is slow, so it's very easy to be grabbed out of anything but my jump attacks so I just didn't use anything else very often
Enemies are also fairly repetitive even if they come in different skins. There really isn't much difference between the big zombie and the lady zombie besides how many hits it takes to put them down. All the low enemies (dog, tentacle man, potentially snake) are basically just patience checks since they usually spawn right in front of traps. So you either need to wait and kill them before navigating the trap (and depending on your character, it may take a lot more patience) or knock them back enough to get past the trap without getting grabbed when the enemy gets back up. Cheerleader is easily the worst at dealing with traps since, because her jump doesn't move forward, her only tool for it is her roll. And if you're running before you roll, she will continue running. Straight into an enemy.
Which actually brings up another issue: Things are extremely low stakes. So long as you're inching forward, you have no real fear of a game over. There isn't a health bar nor does the time it takes to get up after each grab get longer. The only way to lose is to stand still long enough for the hoard to catch up, which is very difficult to do unless you're purposefully throwing or the amount of mashing you have to do to break enemy grabs has crippled your hands. This could be appealing, but you only need to beat the game once to unlock gallery and then you can see whatever you want without having to deal with the timer. So it's better to just advance and get it over with
This is a personal gripe, but I like it when there's a payoff at the end of the game. A sort of "congratulations" for getting to the end. There isn't really one here. You get basically an extended scene you'd have gotten from losing and that's it. Also a personal gripe, but I don't think Cheerleader should have been released in the state she's in. Her story hasn't been done at all, so she's basically cloned from the Teacher. Her story, her loss scene, and her "victory" scene are literally just the Teacher's.
With gameplay out of the way, we get to the porn. Each enemy gets 2 unique scenes with each character and during one of those scenes, another enemy in the area can jump in. The jump in is extremely half baked since it's the same every time even if it clips badly. Them being all the same also limits what one of the main scenes can be since it has to allow the jump in to happen. Some of the positions the ladies can find themselves in are creative, but those are usually reserved for the more out there zombies. The bog standard ones get bog standard scenes, so I personally wouldn't recommend it just for those. The "victory" and defeat scenes are fully animated scenes so they're a lot better, but I still wouldn't recommend the game just off that.
This game really could be a lot more with a bit of care added to it, but as it stands, it's good for 30-45 minutes and that's about it.