Here is the full list of all 16 Ezaron Defense achievements.
All perks researched
Finish all levels with 3 stars
Finish Chapter 4
Finish Chapter 3
Lost 1st time
All buildings and upgrades
Full upgrade Magic Tower
Finish Chapter 2
2000 kills
Full upgrade Canon Tower
Full upgrade Energy Tower
1000 kills
Finish Chapter 1
500 kills
Full upgrade Archer Tower
First built building