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