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