Here is the full list of all 21 Flobe achievements.
Pop 100 Blues
Pop 300 Blues
Pop 500 Blues
Pop 100 Purples
Pop 300 Purples
Pop 500 Purples
Dodge 100 Greens
Dodge 300 Greens
Dodge 500 Greens
Dodge 100 Missiles
Dodge 300 Missiles
Dodge 500 Missiles
Explode 25 Bombs
Explode 50 Bombs
Explode 100 Bombs
Reach 10x Multiplier
Reach 25x Multiplier
Reach 30x Multiplier
Unlock Double Line
Survive for 10 minutes
Pop a Blue and Purple blob simultaneously