Halo Wars: Definitive Edition

This solution is for earning all "Won X Skirmish or Multiplayer matches" achievements.

This can take anywhere from 3-4 hours depending how fast you execute, my fastest match was 1 minute and 10 seconds, mixing that with setting the game up every time comes to about 2 minutes a game. But if you want all Skirmish related achievements you must also play all maps, play all modes, and play as all Leaders.

All Maps (18 maps):


All Leaders (6 games):


All Modes (5 modes):


After you obtain all those achievements follow this walkthrough for 1-2 minute wins:

Easy boosting method, alone, with only ONE Xbox

As mentioned in the above guides, you can do this in private multiplayer sessions and have the second player resign for a victory in around 40s (including loading times).
Devices needed for doing this alone:
-Have a Xbox One / Series
-Have Xbox Gamepass Ultimate
-Have a phone or a computer

1) With your main profile, set your Xbox One / Series as your "Home" console so that any profile on it can access downloaded gamepass games without having to pay for another subscription.
2) Start Halo Wars on your Xbox One using a secondary profile.
3) Start Halo Wars using xCloud on your phone or PC with your main profile.
4) Invite your other profile, and have the secondary profile resign the game right when it starts.

Using this, I was able to get the 100 wins in around an hour.
You can also do the coop achievement this way.
Works for any gamepass game.


PS: I played using an Xbox One and a computer. xCloud using Xbox Series, loading times were much shorter on xCloud than on my Xbox One !