I really think the Soviets need an anti tank gun. At the moment the only chance an infantry has of destroying a tank is being a sapper, killing a sapper and taking his satchels, or stealing a panzerfaust. While the german anti tank soldiers spawn with a good weapon and three panzerfausts.
Yeah. Historically, the Soviets didn't invest much into anti-tanks weapons for infantry, but rather gave them more AT guns and fielded more tanks.
However, they did use a great deal of Molotov cocktails on both sides. Most of the pre-1942 tanks (T-34, PzIV, StugIII) could be disabled (and sometimes killing the crew or badly maiming them) by a well place Molotov cocktail on the engine grill.
Sometimes if you threw it on the turret or drivers hatch, the burning liquid would seep through the cracks and get on the crew.
Tigers, Panthers, and IS-2s were actually designed to prevent such happenings due to better seals on the hatches and engine exhaust.