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