Here is the full list of all 79 LightBear achievements.
Reach 100 ft
Reach 200 ft
Reach 300 ft
Reach 400 ft
Reach 500 ft
Reach 600 ft
ArmorShirt
Blue Fire Octahedron
Blue Marble Bunny
Blue TwirlToss Octahedron
Blue Water Bunny
Brown Angry Octahedron
Brown CircleToss Cube
Diamond
Fire
Ice
Yellow Flower
Yellow Rock
Bunny Statue
Cube Statue
Duck Statue
Blue Rooms
Green Rooms
Icosahedron Statue
Red Rooms
White Rooms
Yellow Rooms
Octahedron Statue
Spike Statue
Blue Water
Yellow Water
Full Set
Club
Finished opening story
Green Angry Bunny
Green Diamond Ghost
Green Neutral Spike
Green Poison Ball
Green Rook Cube
Green Sine Spike
Impossible Mode
Poison
LightBlue Angry Cube
LightBlue Neutral Bunny
LightBlue Twirl Ghost
LightGreen Angle Octahedron
LightGreen Cash Duck
LightGreen Neutral Pyramid
LightGreen Poison Ball
New Game +
Headwear
Shield
Orange Big Cube
Orange Bishop Pyramid
Orange Death Cube
Orange TwirlToss Cube
Orange Water Bunny
Pink Big Ghost
Pink Big Spike
Pink Fire Duck
Purple Bishop Cube
Purple Water Octahedron
Red Angle Octahedron
Red Angry Blob
Red Death Octahedron
Red Fire Cube
Red Neutral Cube
Red Small Cube
Red Twirl Pyramid
New Game
Tall Gem
White Fire Spike
White Rook Diamond
Yellow Big Diamond
Yellow CircleToss Ball
Yellow CircleToss Blob
Yellow Small Blob
Yellow Speed Diamond
Yellow TwirlToss Pyramid