You can't do nothing without an allies! Start the game at the very first scenario, in the 1936.

1.Never invade czechoslovakia nor poland at this point.
2.Form an ally with british
3.From now,make sure british is you ally,nor you'll face one of the strongest enemy
4.Invade some country that nobody cares about it, like hungary nor czechoslovakia at this point (be sure to save your game before invade the country, just in case if british break up your ally). If those 2 country made british declared war/break ally with you, invade another country.

After invading some country (without breaking an ally with british),research for heavy tanks and fighter (if it possible without destroying your economics,just make sure you've research for heavy tanks)

Be patience,doing nothing but pressing next turn is better than patientlessly invade country without preparation.

After the research is complete,create the divisions of heavy tanks!

By now,there is a big chance to invade some country like poland WITHOUT destroyed our ally with british.

Invade those countrys using your heavy tanks!

After invading some countrys,do a research for an advanced tanks!

After the research is complete,build the advanced tanks!

Now.. its the time for us to INVADE EUROPE AND ASIA! (at this point there's a small chance that british would break allience with you,so save your game before pressing the end turn button,just in case)

1.Invade france using your advanced tanks
2.Invade USSR!
3.Invade Italy!
4.Invade THE OTHERS!

After the fall of sovyet and france,im pretty sure almost all of the europe and north of the asian is now at you and british hands. Prepare invasion to china and japan!

1.This is why you'll really need british,japan is strong in the sea,and you are weak. Thanks to british,you could transport your division to japan with a small chance of being destroyed by the japanese ship! Friends always help each-others,right?
2.Send some fighters nor bombers,just in case if japanese plane is bombing you/you and british are defeated in the sea

After you conquer Asia,do some research for ship and build some ship.

Now,after building a lot of ship,send your tanks/troops into the regions of British ,make sure your troops is stronger than the troops in that region (dont forget to place your ship in their place to)

After placing your troops,declare war to british. Theres a big chance that you are lost at the first try,so before declare war,save your game just in case so you could build more troops.

After the fall of British,there is a chance that US declared war to you (even when you are fighting with british),at these time,place your sea at the east,and some figther (that you've placed in before) just in case if US is bombing you!

US is stronger and far beyond you,you could escort dozens of advanced tanks with a lot ship for the invasion of US. There is a big chance that you are going to lose. Or,just form an ally with him!