When you find a Kak 98, pick it up. It is one of the most powerful guns in the game. There is a scoped-Kak 98 in the last level (Dragon's Teeth) in the second bunker in the building.

The most common bolt-action rifle is one of the best weapons for small groups of enemies. It may be a bolt-action, but it is a one-hit kill almost all the time. Make sure to keep an automatic for the slow reload.

Smoke grenades provide instant concealment. They are very useful for getting close to tanks on the Russian front.

SMGs work best at close range. The PPSH 42 is recommended.

Rifles are useful at short to medium range. The best ones are the SVT40 and Gheher because they are semiautomatic.

Sniper rifles are very useful for picking off machine gunners before they can get set up. The Gheher sniper rifle is recommended because it is semiautomatic.