2nd map was a lot of fun i got to say, enjoyed it more than the first map, though it wasnt really clear what to do at the part where you invade that building with all the combine coming out (the one with rocket turret and friendly shoppers) i might have missed a message, but we ended up with the screen flashing white and then having to walk back to the elevator, not sure if that was a 2nd ending if you fail to do some objective or the real one.
As you might have noticed that part is not %100 complete, but you should have heard the final speech of Breen as Freeman blows up the teleportation device in HL2. Since you are too close to the Citadel you get unhealthy doses radiation and stuff. And it ends there. And since elevator is locked you have to find another way. But either way it ends with radiation reaching fatal dose. I'll collect some moar feedback and update both Trainyard and City Fight.
Turrets should be fixed and the one outside is removed. And soloing the trainyard... is nigh impossible without getting killed... a lot. There is an MP5 crate with nades right around the fence and g3 in the shed with comm console.