Yes, banishing those heretic files did the job. Problem was solved, thank you, dear VPaulus, Emperor bless you.

I thought, that might be useful. Actually, each time i hit "play" button, "ArmageddonGame.exe*32" process appears in the task manager, with low memory usage, and stays that way until i force end it. Steam also states that i'm in game until i kill that process.

Looks empty:

VER:1
PLATFORM: WINDOWS
CPU String: GenuineIntel
Stepping ID = 3
Model = 12
Family = 6
Extended model = 3
CLFLUSH cache line size = 64
CPU Brand String: Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz
Cache Size = 256K


That's all.

I've got the same problem, nothing happens when i'm launching .exe, steam is all right. I was playing the game without any problems with 3/4 DLC's, and just after i bought Glory of Macragge it stopped working, so i guess the answer lies in that direction. Win7x64.