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.
Pin 3 enemies within a 10 second period.
Complete Hyperion Base.
Complete a single mission in co-op (2, 3 or 4p).
Fully upgrade 1 perk in the Team Perks menu.
Upgrade Dalton's entire skill tree.
Upgrade Naya's entire skill tree.
Upgrade Izzy's entire skill tree.
Upgrade Jacob's entire skill tree.
Spend 100,000 Fuse Credits.
Eviscerate 3 enemies at once using the MagShield.
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.
Retrieve your Xenotech Weapons.
Destroy all of the trucks at the bunker defense.
Activate Fusion for the first time.
Perform a stealth takedown on the Raven soldier at the urinal.
Kill 3 Leadfires, Leadfoots, or Leadshots using only your sidearm.
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 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.
Purchase a single Team Perk.
Kill 2500 enemies in Campaign and Echelon.
Complete all missions on Lethal.
Fully upgrade 16 perks in the Team Perks menu.
Unlock 16 perks.
Complete 6 waves on a single map with 2+ players.
Complete 12 waves on a single map with 2+ players.
Get 5 Stars on a single Echelon Map with 2+ players.
Get 5 Stars on all Echelon maps with 2+ players.
Stealth takedown 4 enemies at once in a four player co-op game.
Collect every piece of Intel in the game.