Full list of all 14 Future War: Reborn achievements worth 1,000 gamerscore. It takes around 30-35 hours to unlock all of the achievements on Xbox One.
Kill 6,000 Aliens
Kill 4,500 Stinger(s)
Kill 2,400 Smasher(s)
Kill 3,000 Explorer(s)
Kill 3,000 Megascarab(s)
Kill 2,000 Elite(s)
Obtain 6 weapons
Use Machine Gun for 300 times
Using Autocannon 300 times
Clear Stage 3-7
Collect 63 Stars
Collect 2,000,000 Gold
Collect 3,200 Energy