Uhmm, If nobody give a good comment let me then start with mines:
Pic no. 01 : I like the gun even if you didnt make it but thats all.
Why do all the walls have the same textures?,textures are one of the most important things on a game and please,even if you cant do some there are thousands of free textures on the net.
Why is all that flat?make some details to that walls and the door,well i dont like the door and it seems yout IMAGINARY character is bigger/taller then the door.
BTW,make the room more higher.
Pic no. 02 :Yeah,blood on the wall,wow,everyone will stand hours there looking at the blood when playing your game.
Pic no. 03 : A room again with the same stupid textures,without any details,hell there“s not even a barrel or a machine there,that room definetly was worth to be showed!!!
Pic no. 04 : Too dark
Pic no. 05 : better,but it would not impress me if you would have showed just the room with nothing inside.
Again,bad textures and a room should not only consist of one texture.
Pic no. 06 , 07 and 08 : Bad textures that again,are the same in every wall like if there werent any other textures to use.
No details,Just flat walls with textures,wow,you are really creative and put much work on your projects.
I better not get on commenting your project, i think you will get the point if you think a little harder.
You should make a good transition between textures and not,for exemple,one wall metallic textures and the other wood textures,got the point?
dont get me wrong but in my opinion you are more exited about showing something here then really making something worth to show not only for others but for your own lerning path.

Just a fan of art!