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