I really loved this mission
beat in the first go but need some saves.
I used the tiger very successful eventually run out of ammo and had to look for it in some crate.
The key is using the tiger in the back as a sniper or as a reserve sometimes moving it in then reversing him out and parking at places where he hits most vulnerable parts of enemy tanks, I remember I parked him East of map in town when some churchs spawned out of the map east my tiger intercepted them and killed them by hitting they sides.