Here is the full list of all 36 Ninja Tycoon achievements.
Take over the final Region
Survive Arcade Mode for 1 Year
Play Arcade Mode
Use a Workshop Unit
Complete a Mission of Difficulty 1 with a Level 100 Ninja
Build 4 Training Fields
Send a Ninja to reinforce the previous Outpost
Let the reinforcements bar reach 290
Take over a Region
Send a Ninja to secure a Region
Fully Max a Ninja
Craft a Tier 3 Equipment
Complete a Mission with Difficulty 7
Complete a Mission with Difficulty 10
Assassinate the Clan Leader
Unlock all Research
Recruit 10 Ninjas
Research Training Field 3
Gather a Diamond
Build a Hospital
Specialize a Ninja
Craft 30 Pieces of Equipment
Craft a Tier 2 Equipment
Hold 5000 Gold
Complete a Mission with 5 Ninjas
Research Tower 2
Kill 200 Raiders
Hire 30 Workers
Research Build Area 2
Complete a Mission with Difficulty 4
Craft a Tier 1 Equipment
Construct 20 Buildings
Survive a Raid
Gather 1000 Wood
Complete a Mission
Recruit a Ninja