Made some changes, if there's no fatal problems it can stay as it is.
https://1drv.ms/u/s!Aj4b71jV4JhLgw1YKzDfsRxrlisB?e=KYGI3c
This mission is built this way that you cannot really do something straight, you have small and big problems, if you want to use cannons on the hill, you have to clear the area first. If you want to use tank, you have to get to the other side first.
You could skip the South side hilltop but sometimes you cant, it depends on the Objectives.
Some tips:
Always crawl while in trenches.
Search enemy corpses to find additional equipment, you'll need it !
Also some ammo boxes can help.
Second spawn-point is activated when enemy around it and tank is eliminated.
There are some snipers, they can ruin your day.
If you can choose, the first priority should be to eliminate enemy who has more firepower. (if you get close to North side hill, take out Flak first, anything else can wait)
Some more vehicles on the hills, you can use them to hide your ass behind them...