Game too hard to be enjoyable

[xka]

Sometines is really hard. In russian submarine mission, when yo get comunication tower, you receive only a few soldiers, and they attack you with tanks and then, if you survive, you are attacked about every 5 minutes with a german column ..its imposible (the only antitank cannon destroyed, and panzershrek failes too much) I have restart mission and im cleaning zone before getting communication tower