Forgotten Hope 2 is an award-winning World War II modification for Battlefield 2TM and is based on the original Forgotten Hope, a modification for Battlefield 1942TM, one of the most popular multiplayer games ever. Battlefield 1942TM featured land, sea and air combat in a way never before seen. It was the goal of the development team to maximize the game experience by adding both a realistic and enjoyable gameplay to FH and now to FH2.
At the start of the war, the Red Army could call on only a handful of self-propelled guns for infantry support and tank destroying. In late 1942, orders were given for a light self-propelled gun armed with the 76.2 mm Divisional Gun ZiS-3. The winning design was Factory 38's SU-12. This used a lengthened version of the T-70's hull, fitted with an enclosed or canvas roofed case-mate at the rear.
The SU-76 had the same twin engine setup as the early T-70, and the problems this caused were severe enough that production was halted after just 350 had been made.
Actually thats SU 85B Tank Destroyer.
The SU-85B (GAZ-74b) was a prototype development of the SU-76. It never got beyond testing because it was more expensive than the SU-76M and it's long 76mm gun was not that much better.
This is definitely the SU-12/SU-76. The GAZ-74b had a much wider superstructure than this.