A pretty fun exploration experience with some lacking qol. I was able to get through a few bunkers and drive the train past 3 level transitions IIRC. I get the impression I haven't found all of what this game has to offer, but I think I've gotten a decent look.
+ The dark atmosphere is set really well, it nails the feel of creeping around in a dark, abandoned bunker.
+ The art is done really well. The hand-drawn characters, items and environments look really good. Its always a nice touch when the armor you equip is visible on your character so I appreciate that.
+ Mechanics around gun handling, healing and the like feel appropriately complex and gritty. Guns have a lot of recoil, but with fast time to kill that works out, so you're encouraged to fire in short controlled bursts.
+ The "fanservice" elements aren't as overwhelming as one might assume from the screenshots, the worst of it really is one if the two characters having a kinda revealing outfit. That might be a positive or a negative depending on your perspective.
- It's funny you mention the inventory was made with AI, since it's the game's biggest weak point. I like the concept of it, with the tetris piece items you need to carefully organise, but basic quality of life features, like the ability to shift click (or some other control) to quickly transfer items from you inventory to a container, are missing. A lot of the item icons seem to not be scaled right, and there often aren't item descriptions to help you know what an item does, what kind of ammo it takes, etc.
- Without the torch item, there are a lot of dark areas which you can't explore without flares. Not a massive problem in concept, but the flares should probably be made more common, as there were areas where I couldn't find any before them and could not enter.
~ Ammo is quite scarce, which sorta fits the survival gameplay feel, but can be an issue when you encounter massive hordes of zombies you have no choice but to melee. This might be an intentional feature to encourage stealth though, so maybe I'm wrong.
~ There's a debug chest with every item in the game left over in one of the early levels. Not sure if you meant to leave that in, but I helped myself to a halberd which was fun.