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