Finally beaten the final challenge of this game. Knew it would be hard, but good god the amount of leechers afkers and other scum of StonePlanCanTwine was too high to handle them alone. So last leg felt very refreshing with at least 1 teammate on my side, who will launch any missions immediately and not after 10 mins.
Although with challenges done the game is pretty much finished for me. The only other goals are maxing survivors and the book. Which can be easily done together like in year or two. And that's pretty scary to think about.