Here is the full list of all 40 Fuse achievements worth 1,000 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Xbox 360.
Complete Raven Facility.
Pin 3 enemies within a 10 second period.
Defeat Meilin Mao.
Destroy all of the trucks at the bunker defense.
Defeat Ivan Sovlenko.
Perform a stealth takedown on the Raven soldier at the urinal.
Complete Hyperion Base.
Eviscerate 3 enemies at once using the MagShield.
Purchase a single Team Perk.
Retrieve your Xenotech Weapons.
Save Luther from the Order of Grigori.
Complete Grigori Station.
Complete all missions on normal difficulty.
Complete all missions on Lethal.
Complete a single mission in co-op (2, 3 or 4p).
Complete all missions co-op (2, 3, or 4p).
Get Dalton to max level.
Get Naya to max level.
Get Jacob to max level.
Get Izzy to max level.
Kill 2500 enemies in Campaign and Echelon.
Fully upgrade 1 perk in the Team Perks menu.
Fully upgrade 16 perks in the Team Perks menu.
Unlock 16 perks.
Upgrade Dalton's entire skill tree.
Upgrade Naya's entire skill tree.
Upgrade Izzy's entire skill tree.
Upgrade Jacob's entire skill tree.
Complete 6 waves on a single map with 2+ players.
Complete 12 waves on a single map with 2+ players.
Spend 100,000 Fuse Credits.
Get 5 Stars on a single Echelon Map with 2+ players.
Get 5 Stars on all Echelon maps with 2+ players.
Create a chain reaction that takes out 3 enemies at once.
Crystallize and kill 3 enemies at once.
Perform a stealth takedown on 2 enemies at once in a co-op game.
Stealth takedown 4 enemies at once in a four player co-op game.
Activate Fusion for the first time.
Collect every piece of Intel in the game.
Kill 3 Leadfires, Leadfoots, or Leadshots using only your sidearm.