Halo Wars 2

Again, this achievement is very self-explanatory: out of the three Weekly Challenges you are given for a week, you must complete at least one of them for four weeks straight.

Weekly Challenges involve a bit more commitment to the online modes of the game but focusing on the easiest of the three provided in a given week shouldn't be too difficult, especially if you're lucky enough to draw a more generic Weekly such as, "Complete 9 match-made games as [Leader]. Similarly to what has been covered above in "Short-term commitment," a single match of Blitz online typically lasts ten minutes, so if you have this Weekly Challenge, focus on using the specified leader in Blitz matches.

Once you have successfully completed one Weekly Challenge for four weeks in a row, this achievement will unlock.