Here is the full list of all 15 JYDGE achievements worth 1,000 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Xbox One.
Got all medals for all missions of the Acts on Nightmare difficulty.
Got all medals for all missions of the Acts on Grim difficulty.
Completed the game as the hero of the citizens.
Found all collectibles.
Upgraded four special weapons to max.
Got all medals for all missions of the Acts on Hardcore difficulty.
Got all medals for all missions of the Acts on Normal difficulty.
Purchased all cyberware.
Upgraded four Gavel firemodes to the max.
Purchased all weapon mods.
Completed the third act.
Completed the second act.
Rescued 50 Citizens.
Completed the first act.
Got three medals in a mission in one difficulty.