Halo Infinite

This achievement requires you to complete a variety of objectives to attain, many of which have their own specific achievement tied to it. To achieve it, you will need the following completed:

- Complete all Story missions

- Clear out all Banished Facilities

- Attend to all of the UNSC rescue beacons

- Destroy all Banished Propaganda Towers (40)

The Facilities will show on the map (as a purple icon) but capturing FOBs will show UNSC beacons and collectibles in the surrounding area. This will show some of the Propaganda Towers on the map, but not all of them (same is true for the other collectibles.)

I would recommend using this video guide for the Propaganda Tower portion, credit to Halo Canon's channel:


You can see how many propaganda towers you have in each area as you scroll over the 4 sections in the map screen as the far most right item. You will need to get at least 2600 Valor to unlock the Wasp for deployment or get good at hijacking banshees with the grappleshot so you can fly around the map to get this done.

Once you have done all of that, the achievement is yours.

Edit: After testing it again on a different save file, it seems that FOBs and HVTs do not give you Valor, but completing Story missions does. Credit to Crazy Dutchman for bringing this to my attention.