There is a nice concept here, and if this would be an Early Access title, I would recommend it, unforunately, since this is apparently a finished product, I have to advise against purchasing it.
This is basically a dungeon crawler fps with permadeth and a lot of bugs and no replay value. I have tried the game three times, and died all three times because of bugs. (stuck on the floor, fell out of a map, teleported inside a cage)
The graphics are okay, this art style is pretty common, and Floor Massacre doesn't try to reinvent the wheel. The lighting is pretty great on the other hand, and while assets do repeat really often, the environments don't feel empty or lifeless. The music and most sounds are probably from freesound.org, because I have heard them in other indie games before.
Unfortunately, there is absolutely no variety in the game, sucking any replay value out of the experience. Firstly, every weapon feels slightly the same, apart from the double barrel. They all feel too underpowered, even though their sound effect is great.
Every zombie is identical when it comes to their movement and mechanics. They look slightly different, but they behave the same, so shooting them gets a bit boring, since no thinking is required. Zombies don't seem to have specific hitboxes, shooting them in the head doesn't kill them and they don't seem to have exploitable weakpoints either.
The levels are identical every time you play, but even knowing the layout doesn't help, since enemies usually take up so much space, that you can't run past them. The loot is in predetermined positions too, soo there is no reason to explore. Enemies don't drop anything, either.
Sadly, this is just too simple and basic to be interesting. If the environment is randomly generated or the weapons were distinct or the zombies acted differently or perhaps there was just a little bit of tactics or decision making perhaps the game would be a bit more fun and replaying wouldn't feel teadious.
Unfortunately, this isn't the case, so I can't recommend.
