First Person Shooter Video game in the works

I have taken it upon myself to create a rather odd first person shooter. The coding is done for the most part. just a few intermittent details to take care of, such as a nice GUI and startup screens, but that should only take a few hours of work in photoshop and fireworks.

Level 1 - basic introduction into controls and movement, mini boss to end level.
Level 2 - introduction into map segments and room controls, mini boss maze to end level.
Level 3 - Larger map, introducing larger enemies, and a full scale boss to end level.
Level 4 - the gate. First step into the abyss created by laboratories playing god. more large scale enemies and a multi target boss to end level.
Level 5 - interior building, working way through first floor of laboratory. multi target boss to end level and gain interior access key.
Level 6 - interior of first floor. mini bosses for each of three access passages, each passage way has a 1 in 3 chance of leading to the final boss for the level. End level boss will be multi target. End of first floor, access to second floor granted.
Levels 7-30 TBD

So far I have the maps laid out, the characters modeled although nothing is mapped yet, either going for a zombie style invasion or laboratory mutant breakout. can easily be mapped to work either way.

I still dont have a name for the game but it should be a rather interesting game for being coded by one person and possibly a second and or third person working on graphical mapping.