Here is the full list of all 76 Oh No Ninjas achievements.
Give Up in 25 ninja battles.
Buy one upgrade in the Dojo.
Buy 2 upgrades from the Dojo.
Own all upgrades from the Dojo.
Earn enough XP to reach level 1.
Earn enough XP to reach level 5.
Earn enough XP to reach level 10.
Earn enough XP to reach level 15.
Purchase a new word list in The Dojo.
Buy 5 word lists from The Dojo.
Buy all Word Lists from The Dojo.
Lose 25 rounds of Ninjas.
Lose 100 rounds of Ninjas.
Start a ninja battle.
Play 10 rounds of Ninjas.
Play 25 rounds of Ninjas.
Play 100 rounds of Ninjas.
Play 500 rounds of Ninjas.
Play 1000 rounds of Ninjas.
Win 25 rounds of Ninjas.
Win 100 rounds of Ninjas.
Earn or buy 5000 coins.
Earn or buy 50,000 coins.
Earn or buy 100,000 coins.
Use a ninja star.
Use 25 ninja stars.
Use 50 ninja stars.
Use 100 ninja stars.
Defeat 100 ninjas.
Defeat 25 ninjas.
Defeat 50 ninjas.
Survive 50 ninja attacks.
Survive 100 ninja attacks.
Survive 10000 ninja attacks.
Go to the Credits Screen.
Own the Alley arena in The Dojo.
Own the Wrestling Ring arena in The Dojo.
Own the Pagoda arena in The Dojo.
Buy all the hats in The Dojo.
Buy all the glasses in The Dojo.
Own every item in The Dojo.
Own The Dojo Top Hat accessory.
Own The Dojo Aviators accessory.
Own The Dojo Fez accessory.
Own The Dojo Gaga Glasses accessory.
Own The Dojo Trucker Hat accessory.
Own The Dojo Retro Glasses accessory.
Own The Dojo Police Hat accessory.
Own The Dojo Construction Hat accessory.
Own The Dojo Wizard Glasses accessory.
Own The Dojo Silly Glasses accessory.
Own The Dojo Sailor Hat accessory.
Own The Dojo Laser Eyes accessory.
Own The Dojo Panda Hat accessory.
Own The Dojo Wizard Hat accessory.
Own The Dojo Cowboy Hat accessory.
Own The Dojo Monitor accessory.
Own 2 different wrestler characters in The Dojo.
Own all the 3 wrestler characters in The Dojo.
Own all the female characters in The Dojo.
Own The Dojo character Reginald.
Own The Dojo character Jade.
Own The Dojo character Felicia.
Own The Dojo character Bosco.
Own The Dojo character Sid.
Own The Dojo character Mr. Robot.
Own The Dojo character Chipotle.
Own The Dojo character Sue Doku.
Own The Dojo character Fabio.
Own The Dojo character Whoosh.
Own The Dojo character Ong.
Own The Dojo character Ralph.
Own The Dojo character Yorick.
Own The Dojo character The Troll.
Own The Dojo character Jim.
Own The Dojo character C.Fu.