View attachment 643547
There you go man, hope it helps.
Basically non-historical, pray Poland doesn't form miedzymorze, and for some reason the French aren't called in even though they guarantee them. (Weird)
Rush going communist asap, you can cheese it by firing the civil war instantly in the decisions tab and having only 1 cavalry division in the field, and 10 cavalry divisions training, so the enemy AI has no divisions to start with and you can force deploy those divisions and rush their vps.
After civil war, get paras, train 8, then get army XP to crank down their battalion starting number of 3 to 1 so you can have 16. I launched 8 from the Soviets after I joined them, and 8 from Yugoslavia.
Other than that, I also made a spy agency while all this was going, did the necessary upgrades to get a second spy, then launched the 'prepare collaboration government' to lower Romania's capitulation limit.
Use the divisions you get from the puppet focuses to hold the front line.
When you declare war, hopefully they don't join a faction, and MAKE SURE you call in Transylvania so you can give them all the territory. Then your paras should land easily as Romania will have diverted most of its troops to the soviet border or your border.
Easy win. I feel sorry for the OP as he spent 7 hours and it only took me 50 minutes and two retries to optimise it

Reminds me of some horrifically attrition based achievement hunting in past HOI4 games lol. *cough* reform-austria hungary and annex the world *cough*