Halo CE: Play Halo: CE on the 15th of any month. - Halo: The Master Chief Collection
Achieve level 100 a second time and choose to re-up for another tour. - Gears of War 3
Kill a Pouncer mid-pounce with Shotgun or Chainsaw - Gears of War 4
10,870/25,5183,965/7,000422/700
4,446/5,6661,900/2,00081/82
1,774/21,699895/4,00066/164