Here is the full list of all 30 Bezier achievements.
Create a chain over 10000m in length
Achieve player level 8
Collect 400 gems in a single zone
Achieve player level 5
Slay 25 enemies whilst inside a bubble
Destroy a shield whilst enraged
Destroy a shield using the Guardian
Achieve player level 3
Defeat Magus Domus
Achieve player level 10
Achieve player level 12
Achieve player level 15
Achieve player level 16
Achieve player level 17
Achieve player level 18
Complete a zone with 10 or less ouch
Survive a zone without being hit
Complete a zone without collecting a gem
Complete a zone collecting no weapons
Acquire over 250000m of endurance chain
Survive until the 10th endurance wave
Survive until the 25th endurance wave
Survive until the 50th endurance wave
Survive until the 100th endurance wave
Complete game without continue
Complete game with full defense upgrades
Complete game with full attack upgrades
Complete game only using the blaster
Refuse to kill your possessed brother
Complete over 90% of achievements