Here is the full list of all 33 Xmas Shooting - there are Scramble!! achievements.
Prove that you are the superior bunny
Clear every stage.
Clear every stage using Orthodox style.
Clear Stage 2 without getting hit on Normal difficulty or higher.
Clear Stage 1 without getting hit on Normal difficulty or higher.
Learn all formations.
Complete every achievement in Xmas Shooting - Scramble!!
Clear every stage using Aggressive style.
Clear every stage using Defensive style.
Clear every stage using Maniac style.
Clear the game while getting all possible Hyper Finishes
Clear the game without using Hyper Attacks.
Clear the game without losing any lives.
Clear Stage 3 without getting hit on Normal difficulty or higher.
Clear Stage 1 without your Chain being interrupted on Normal difficulty or higher.
Clear Stage 2 without your Chain being interrupted on Normal difficulty or higher.
Clear Stage 3 without your Chain being interrupted on Normal difficulty or higher.
Clear a stage with a Chain of 10,000 or above.
Reach maximum Re-Points.
Clear the game using Natural formation.
Clear the game using +0 Formations.
Clear the game using +1 Formations.
Clear the game using +2 Formations.
Clear the game using the default formations and Orthodox style.
Clear the game using Formations that split up.
Clear the game using high-power Formations and Aggressive style.
Clear the game using low-power Formations and Defensive style.
Clear the game using wide-range Formations.
Clear the game using Formations that require special control methods.
Clear the game using rotating Formations.
Clear the game using high-speed Formations.
Clear the game using low-speed Formations.
Clear the game using direct-attack Formations.