Last night time wasn't my friend, so I only accomplished overrunning Borneo, a portion of the Dutch East Indies, Guyana, and all of the Caribbean islands. I'm short on steel and tungsten, but it isn't 1944 and I'm 6 months away from making that a priority. Managing multiple invasions is supposed to be easy with some of the provided tools, but I prefer the manual route which can be tedious and take more time.
One snag last night was the UK bombing my ports and mucking up my absolutely massive fleet. I had to send them out in less than perfect condition and still smoked the Brits. Tonight I'll take Iceland and build it up before pushing into England and make a run at Singapore if I have the time before bed.
One major problem is maintaining a solid front. The IA exploits any gap available and pushes a unit or two through it, running amok and taking territory until you can send units to push them out or overrun them. I may have to ally with Japan to help me take India because of that.
Nationalist Spain and Italy were overrun and I may take a two pronged approach (invading Spain and France) to reclaiming Europe. Africa has many resources but a lot of space to manage. I need to sort out a plan for that beast...maybe use scaled down units to hold the line while several battle groups do the heavy lifting.
I can take the Allies given enough time, but manpower may conspire against me if I want to take the Soviet Union. I may have to side with the Axis if I want to do that, but I have a few years to make that decision.