Here is the full list of all 134 Prime World: Defenders achievements.
Build 10000 towers.
Complete the level with 1 life.
Complete this level with 1 life.
Complete the level without using any magic.
Complete the level without using utility towers (Prime injector, Slow, Stun, Accursed and Detector towers)
Save 350 Prime by the end of the level.
Complete the level without upgrading a tower.
Win 500 games.
Build 2500 towers.
Upgrade 1500 towers.
Summon Next Wave 200 times in a battle.
Upgrade 10 towers to level 3.
Save 400 Prime by the end of the level.
Complete a level without detecting invisible enemies.
Build 30 towers during battle.
Save 250 Prime by the end of the level.
Save 200 Prime by the end of the level.
Complete the level without using towers which target both air and ground enemies.
Summon Next Wave 8 times in a battle.
Complete the level without using towers which deal area of effect damage (splash, cone, chain).
Save 300 Prime by the end of the level.
Complete the level building less than 7 towers.
Sell 100 towers.
Sell 10 towers in one battle.
Summon Next Wave 10 times in a battle.
Use magic 500 times.
Complete the level without using magic.
Complete the level building less than 9 towers.
Inflict 50000 damage using magic.
Complete the level without using towers which range more then 300.
Complete the level without using towers which target only air enemies.
Use magic 12 times during the battle.
Summon Next Wave 10 times during battle.
Summon Next Wave 5 times in a battle.
Complete this level using magic no more than 3 times.
Complete the level without using a Stone Tower.
Save 275 Prime by the end of the level.
Sell 3 towers in one battle.
Win 20 story levels on 3 stars.
Save 175 Prime by the end of the level.
Save 150 Prime by the end of the level.
Complete the level building less than 11 towers.
Summon Next Wave 5 times in the battle.
Save 225 Prime by the end of the level.
Summon Next Wave 300 times.
Inflict 5000 damage using magic.
Upgrade 5 towers to level 3.
Reach level 20.
Build 800 towers.
Save 180 Prime by the end of the level.
Inflict 200000 damage using magic.
Kill 20000 monsters.
Win 100 games.
Complete the level without using the Siege Tower.
Upgrade 300 towers.
Reach level 15.
Win 10 story levels on 3 stars.
Destroy 200 totems.
Complete the level without using the Fire Tower.
Destroy all totems in the battle.
Use magic 100 times.
Complete the level without using Magic light.
Complete this level with under 13 towers.
Kill 8000 monsters.
Complete the level without using the Wooden Tower.
Destroy 7 totems.
Reach level 10.
Upgrade 5 towers to level 2.
Win 5 story levels on 3 stars.
Build 200 towers.
Win 25 games.
Kill 3000 monsters.
Upgrade 50 towers.
Inflict 20000 damage using magic.
Destroy 40 totems.
Summon Next Wave 50 times.
Reach level 5.
Destroy all totems during this battle.
Complete this level without using more than 1 Slingshot.
Complete the level without using more than 1 Fire Tower.
Kill 500 monsters.
Use magic 20 times.
Save 100 Prime by the end of the level.
Win 5 games.
Use magic 5 times during the battle.
Complete the level using no more than 1 Poison Tower.
Summon Next Wave 3 times in a battle.
Summon Next Wave 5 times.