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