Quote: "The whole sepia filter, I tried not to do to much because it is a scify shooter,"
Just take some other color...it might work

A lot of scifi movies work with blue or greyish filters.
Alright, lets examine those screenshots, shall we
Screenshot 1: the first screenshot is already full of stuff that doesn't make sence. 1. You notice how this corridor's wall has lights manufactured within? Place lightsources accordingly because the entire hallway is really dark and especially the walls are pitch black. Then there is this auxilary light standing there.
Screenshot 2 and 3: are basically sepiacolored blackness with corridorparts that light up due to the shaders. Add small lightsources there and some actual lights. Its a high security lab, there are no unlit hallways. I guess you had the idea of the creepy dark hallway, but that really needs to be executed well.

I wont bash anymore on this....just this: The idea of a dark creepy corridor is that you do not know what is going to happen or what kind of hidden corner (that could give shelter to some nightmare creature) lies within. However, the orange fluorescent line indicates to the player immediately that its just a straigh corridor where nothing at all is going to happen.
Screenshot 5 and 6: I dont really know what kind of room that is. Is it intentionally flooded? if yes, just add some shafts for the water to flow in/out. If not...where does the water come from? Those pipes are still intact. However! I would suggest to replace that walltexture.
Screenshot 7: I dont know what happened, but your ceiling textures do not tile anymore. (They appear as little seperate squares) but this is likely not your fault. Other than that I think you could use another soldier. Those in the black uniform appear to fit a lot better than this guy in woodland camo. Other than that there is absolutely nothing in this room. It lags everything. What is it? Where does it lead? why is it so big? where is all the stuff?
Screenshot 8: What?
Alright...I just realized how many more screenshots are following so I pick out more general flaws.
Now we get big white rooms without anything (and I mean ANYTHING) at all. However, we have a bloody message on the walls.
Okay, a text written in blood should have a certain impact on the player. And using the same text over and over again in the same scene...why did you do that? Use it once in a good place: it works. Use it over and over again in random places: its nothing.
Now we get some scenes that dont fit in at all. Its a labratory? Why is there this square hallway, with water dripping of the walls and a mattress lying around here? Where are we?
Next thing is a messed up room filled with some equipment from the last decade? where are we now?
Then we get a bunch of screenshot of silhouettes and ... nothing else. Well, towards the end you are really making progress!
You have suddenly entites, and something that looks like a scene with some enemies! Thats a good point to start I guess
Reboot again from there...or basically: Add some entites and ask yourself three questions before making a room: What is that room? Who is usually in this room and leaves his crap there? Where is this room? (this is related to how its lit...)
Your retextures are basically unchanged. All you added where some bloodsplats. These guys look like they where in some really bloody swordfight or where painting their yard red. None of them looks undead. Not even remotely. Look at the one in the second last screenshot...this guy is smiling at you.
Zombie/Undead has nothing to do with blood. Its a need addon and it should be used rarely to keep its impact. There is really no reason for them having blood everywhere. Add some wounds. Here, I give you 2 images of undeads.
You see...demonic/dead eyes, deformed face, creepy unhealthy skintone. Undead stuff is not about adding blood on something.
Yeah! I sound annoying and overcritical to an FPSC Project. But I saw you added it on Moddb, and I would really suggest to add it there as soon as it has some more substance...you present it to gamers there, not other developers.
So yeah! Its basically an okay project and might end up being something! Just keep working on it...and add some dang entities
-Wolf