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Finish Rumia's story on normal difficulty or higher

Recommended Item(s): Beginner's Mark, 1-up

Additional info:

Beginner's Mark

• +Taking reduced damage taken by enemies
  
• +1 HP every 50 Combos (given by keeping the rhythm and not taking damage from enemies)
  
• +circled enemies Drop P item (10 power) and +5 HP instead of other perk items
  
• -cost more damage taken from missing rhythm

1-up

• reduce your damage taken by 20%
  
• if you reach zero it will disappear and activate the following buffs:
  
• +2 attack damage
  
• full HP
  
• 8x (8 turn) invincibility
  
• -2 max HP

Recommended Difficulty: Break Dancer (Hard)
Recommended stage (boss): Marisa-Second phase

I suggest to train second attack of Marisa when using her "Master Spark" in training zone in hard difficulty. try to dodge all of her stars and lasers together twice in row and you get more than 100 Graze.






Method:
here's the method showing with screenshot
1-Go opposite side of Marisa when she want to use her "Master Spark"
2-Destroy the star
3- dodge to the circled area (Front > Back > top right > back > bottom right, etc.) opposite route when Marisa starts Master Spark from bottom side.

finish Rumia's story with less than 10 attack power
Recommended item(s): Power belt
Recommended Difficulty: Any
Additional info:

• activating power belt reduce your attack by -1 and gives barrier. it also gives barrier without activating the item when getting 3x

  dropped by enemies.
  

• max barrier= 6x

I recommend get much attack as much as you can to reach last boss faster and also survival then active the item in last boss to reduce your attack to 10 or less when they are low HP.

Recommended item(s): Strange Magnet, Beginner's Mark.
Recommended Difficulty: normal
Additional info: if you take damage you will lose some P items. so i recommend use Strange magnet for this one. and also try to get P items dropped by enemies as much as possible.

Strange Magnet

• Collect P items
  
• Reduce amount of P items lost when taking damage
  
• 4 combo hit and big attack drop P items

Beginner's Mark

• Taking less damage
  
• 50 chains gives +1 HP
  
• -Taking a bit more damage from missing rhythm
  
• Circled enemies gives +10 P or +5 HP

Recommended Levels: normal or easy
Hopefully, you will get it eventually.

Recommended item(s): Boxing Glove
Recommended difficulty: normal
Try to reach boss with almost full HP to charge spam the boss without dodging.
One phase of boss is enough for this achievement.

Combos (chains) Requirement: Almost 328-330 chains before first boss (you get achievement before starting the first boss)
Recommended Stage: Stage 1
Recommended item(s): Gap Parasol, Shanghai Doll
Recommended difficulty: normal or easy
find safe place to keep your rhythm and dodge or use Parasol to evade enemy's projectile.
If you want to active the item, use it with rhythm or you will miss.