You got Gears 1 Seriously? That's one of the achievements that needs the most dedication.
It's my 8th Gears completion across all platforms (including Japanese Xbox 360, pc, Windows 10 and mobile). 3 more in progress but only Gears 5 likely to be completed within a reasonable timeframe. Gears UE Windows 10 has unobtainable achievements and Pop will take years.
17050/17750 - 96.06%
Gears 5 700/1000
Gears 4 4000/4000
Gears of War: Ultimate Edition 1250/1250
Gears of War: Judgment 1500/1500
Gears of War 3 2000/2000
Gears of War 2 1750/1750
Gears of War 1250/1250
Gears of War: Ultimate (Win 10) 950/1250
Gears of War 2 (JP) 1750/1750
Gears of War (PC) 1000/1000
Gears Pop 900/1000