Here is the full list of all 12 Guwange achievements worth 200 gamerscore. It takes around 3-4 hours to unlock all of the achievements on Xbox 360.
Destroyed the Great Statue in Stage 3 without destroying any of the small statues.
Cleared the game using Shishin.
Defeated Guwange-sama without taking damage.
Connected a 30,000 coin combo.
Cleared the game using Kosame.
Suffer a noble defeat by Guwange-sama.
Scored 50,000,000 points.
Scored 25,000,000 points.
Cleared the game using Gensuke.
Connected a 10,000 coin combo.
Collected 1000 coins during a boss battle.
Continue playing to unlock this secret achievement.