Well, Air & Space Museum on that map is pretty clearly an Invaded mission that needs to be completed.
To figure out what you need to complete, start by hoving over Tidal Basin in the southwest. Either you can do it and you'll be done, or it will show you (both in a list in the text description at the upper left and with red lines) the prerequisite missions you need to complete. Those may have their own prerequisites you need to complete in the same way.
https://www.ubisoft.com/en-us/help/t...on-2/000064787
Based on this, I think I did everything for World Tier 4. But I guess, I'll need to complete all of the invaded missions just to be sure.
Completing all the Invaded missions is precisely what needs to be done to raise the tier!Originally Posted by Ray_29 Go to original post
The document you reference clearly has errors in it. First of all, you also need to complete Capitol to reach WT 1. And it looks to me as if they've reversed the WT 3 and WT 4 conditions: your map clearly shows you already at WT 3 with Air & Space Museum and Capitol invaded, and just for consistency you'd expect Roosevelt Island to be the WT 2→3 requirement and Capitol to be the 3→4 requirement to match the order from the level 1-30 game.
At any rate, don't trust all the documentation you read about the game, anyway. The game has changed a fair amount over time, and a lot of sites have outdated documentation and articles.