Here is the full list of all 35 Yasai Ninja achievements.
Beat "Leek Town"
Beat a level with no deaths
Beat "The Escape"
Beat "Prisoners"
Complete 100% of the game
Beat "Freedom!"
Beat "Sensei"
Beat "Forge Road"
Beat "In Hell"
Beat "Burn Burn Burn!"
Beat "Run!"
Beat "Kyurinaga's Army"
Find 25% of the Ancient scrolls
Find 50% of the Ancient scrolls
Find 75% of the Ancient scrolls
Find all Ancient scrolls
Dodge an unnecesary fight
Kill 150 soldier cucumber
Kill 50 archer cucumber
Kill 25 armored cucumber
Kill 25 ninja turnip
Kill 50 spicy chili
Defeat the Shogun as Broccoli Joe
Defeat the Shogun as Kaoru Tamanegui
Touch 100 objects
Beat Cauliflower taking no damage
Beat the game in PRO mode
Kill 2500 enemies
Beat an exploration level taking no damage
Kill 250 soldier cucumber
Kill 100 archer cucumber
Kill 50 Armored cucumber
Kill 50 Ninja turnips
Kill 100 spicy chili
Beat the game in cooperative mode