Longplay: Liquidator (1998) - Episode 1
Level 1 (Welcome): 0:00:16
Level 2 (Far settlement): 0:03:16
Level 3 (Guardians marsh gods): 0:30:53
Liquidator (Ликвидатор) is a Russian game, developed by Akella and A.B.T., Partizan Software. This game made on the Build engine and looks like addon or mod for Duke Nukem 3D.
I decided of starting a longplay. It is first part of full playthrough this game, it shows full walkthrough of Episode 1.