This is my first ever crack at the full campaign. I have been playing this game since Feb 2017.
In 1941, there was lots of encirclements. Leningrad was surrounded but I did not isolate it completely because of the Lake Ladoga "highway". I made it right to the gates of Moscow but couldn't take any parts of the city. In the south, Kiev fell and I pushed right to Rostov on the Don but couldn't take it.
The 41/42 winter was hard on my troops and on my resilience. We were pushed back everywhere but held the Volkov line. The Romanians could not hold the line in the Ukraine and the 6th Army south of Moscow had a very rough time of it. At times my Panzers had to line the front defence and/or fire fight the Soviet advances. As my line started to straighten out it freed up a few of them. This allowed me to refit some of these units and some of the battered infantry divisions which were down to 35% TOE. The plan, following the winter, was that the majority of my Panzer forces would be pushed north with the aim of trying to encircle the Volklov line, isolate and take Leningrad. If that went well then I might push for Moscow.
After the winter ended there are a few clear turns in between mud turns. My thrust to cut off the Volkov line stalled and several encirclement's that I made had to hold out during these mud turns. A couple of the aggressive Panzer divisions were encircled but managed to hold out.
Now in mid July 1942, I think the mud is done for a while. The Soviets lines have fallen apart in the south and they only hold strong in the Crimea and around Moscow. I have broken into the outer suburbs of Leningrad and might bag a couple of armies east of the Volkov River (plus those in Leningrad). In the south, Rostov on the Don in about to fall. If you look at the screenshot the stats in the bottom right, their many power is actually less than the total Axis manpower. I think I might have them, I just don't know how many reinforcements they will get during the summer.