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