SWAT goes deep into the house through a glass door (disguised as a mirror) to train, where they get to the underground laboratory. It turns out that the train took them to the "ant hill" - the secret laboratory corporation «Umbrella», situated near the town of Raccoon City, which conducted the study of viruses. Getting to the quarters, "Red Queen", the special forces disable it. As a result, all the closed doors were opened to release the entire indoctrinate personnel. Zombie attack survivors and if one of them is bitten, it has a few minutes to find and enter an antidote, otherwise a member of the command dies ... The game is presented in survival mode, ie players must escape of zombies as they can, core of the game relies on multiplayer.
Only thing I have bad to say is that the train needs fixing. Since you're basing this mod off the movie, it should be an armored train, similar to the ones in Half Life 2 already (the combine trains). Other than that, this area looks strikingly similar!
At the moment we do not have a man who would make such a model train. We have to use the fact that there is.
If that's the case, why not just use the original HL2 combine trains, but skin them? Seems more realistic and fitting.
1 - it's small
2 - it is impossible to enter, and to continue on its path