The graphics and animations look really nice.
I would love to see a finished version of something like this. I really like the atmosphere.
Now, I think the details are what separates a decent game from a really good game. Here are some things I think you should fix/improve, excluding obvious things that are not here for, again, obvious reasons, such as more enemy types, items, abilities or an inventory.
-As stated before, the elevator needs some rework, as it tends to glitch a lot.
-The attack movement seems to create some sort of collider that allows the character to climb walls or ramps by attacking. This needs fixing as it both breaks the inmersion and could potentially allow the player to do some exploits on more complex scenarios. For some odd reason, this only happens on what I believe is the last wall to the bottom left.
-The enemy corpses seem to have a small collider even after dying. I can see the use of this, as it allows them to "fall on the floor" on certain random circumtances, but they should not collide with the player, as you can drag the corpse around in a way that looks pretty bad, specially when you are both pushing the head AND the body, which should be separated.
-There seems to be no falling animation. Or at least not a clear one. Probably fix.. I'm not sure? It seems like it uses the same animation as dodging, but this doesn't really look good when falling straight down.
-The floor is on top of the character. Or rather, it is drawn on top. This shouldn't be noticeable on normal conditions, but as soon as you go up or down a ramp, you can see that the player looks as if in between the background wall and the floor. It just looks very bad.
-You can move the enemy bodies with the arrow keys, enhancing their movement speed or preventing them from moving... You can even drag their corpses after you kill them! wtf? >.<
-When starting, you can move to the left, and even attack or dodge, making the kinght glitch a lot as it tries to move right at the same time. You should probably disable the controls when this kind of animation plays.
-If you manage to make the elevator go down without you, the chain from which it hangs eventually runs short and dissapears. This happened to me on the last elevator.
-If you, then, jump down, appart from not taking fall damage (which is not necesarily bad), the camera takes a lot of time to catch up. When you are about to get out of the screen, the camera should catch up by increasing it's speed a lot more, so this doesn't happen.
-It is possible to cause a glitch that will disable the ability to dodge... somehow. It may have something to do with the elevators... I'm not sure, but it has happened to me 3 times already.
Overall, nice atmosphere (which looks like some sort of pixel dark souls maybe?), nice art.
The game still has a lot of glitches that need to be worked on, but if there weren't, I would rate this at least a 4, depending on how much content there is.
Honestly, I've tried to make 2d pixel art side scroller games, specifically in unity, and I know it takes a lot of experimentation and determination to make things looks crisp. In my opinion, this game has already a lot of potentential. I really want to see you finish the project.
I hope this review is as helpful as possible.
Have a good day, and keep the good work!