Here is the full list of all 35 Flutter Bombs achievements worth 1,000 gamerscore.
Popped a floating spore in each spore flower location at Wagtail's Swamp
Completed the boss rush
Destroyed over 20 rocks that launch into the air at Hydro's Cavern
Defeated the boss at Hydro's Cavern
Defeated the boss at Hydro's Cavern using only bombs
Defeated the boss at Hydro's Cavern in under five minutes
Defeated the boss at Wagtail's Swamp
Destroyed at least one mushroom being thrown during the boss fight at Wagtail's Swamp
Reached the boss at Cloudbreak's Peak without defeating a Mantis
Avoided triggering a volcano at Molly's Fire Pit
Prevented all fire ant spawns from reaching their volcanic colony at Molly's Fire Pit
Defeated the boss at Molly's Fire Pit
Survived three lance strikes from the boss at Cloudbreak's Peak
Reached the boss at Daisy's Boneyard in Campaign Mode without getting burned.
Defeated the boss at Daisy's Boneyard
Defeated both the boss and twin at Daisy's Boneyard
Prevented all hatching cicadas from growing wings
Keep at least one cicada swarm alive for the duration of the level at Tec's Quarry
Defeated the boss at Willow's Tundra without running out of nectar
Defeated a spider while be drained of nectar at Willow's Tundra
Defeated 25 mutants during one boss fight at Neutron's Lab
Survived five shocks from tesla coils at Neutron's Lab
Triggered a fish to kill an enemy.
Defeated the boss at Switchblade's Badlands
Allowed a minion to be consumed by the boss at Switchblade's Badlands.
Completed Switchblade's Badlands in Campaign Mode without triggering any worm attacks
Defeated the boss at Tec's Quarry
Defeated the boss at Willow's Tundra
Defeated two spiders with one bomb at Tomahawk's Temple
Defeated the boss at Cloudbreak's Peak
Defeated the boss at Neutron's Lab
Defeated the Temple boss
Defeated the boss at Tomahawk's Temple without getting hit by darts.
Defeated the Grove boss
Survived four licks from the boss at Opi's Grove