Here is the full list of all 74 Kingdom Rush achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Defeat Lord Blackburn to avoid war between kingdoms.
Defeat Ulguk-Hai the Troll Warlord.
Defeat Myconid, the Rotten Fungus.
Defeat Moloch the Demon Overlord.
Complete all heroic stages.
Complete all iron stages.
Kill 25 Shrooms without them poisoning your soldiers.
Find the 5 legendary lost ice-shrooms.
Discover the hidden monster under water.
Capture the attention of the mysterious crow.
Kill 15 Wererats before they sicken any soldier.
Find the ninja master rat.
Defeat 9 legions before they replicate.
Defeat 10 Troll Pathfinders while they're treading on ice.
Find the elusive acorn.
Complete the campaign in Veteran mode.
Summon 5 rock elementals in any one stage.
Fire the Sunray 20 times.
Free the sasquatch on the Icewind Pass.
Snipe 50 enemies.
Throw 500 or more axes.
Have a single barbarian kill 10 enemies.
Defeat Greenmuck and its minions.
Polymorph 50 enemies into sheep.
Do not let The Kingpin escape.
Sell 30 towers.
Have your Paladins perform 100 Holy Strikes.
Hold 500 or more enemies with Wrath of the Forest.
Change soldiers' rally point 200 times.
Kill 50 enemies by poison damage.
Defeat Sarelgaz and its minions.
Build 4 Tesla towers in any stage.
Help Fredo escape.
Have your Elves deal 10000 points of damage.
Earn 45 stars.
Train 1.00 soldiers.
Defeat Gul'Thak and its minions.
Have your Paladins heal a total of 7.000 life.
Complete the campaign.
Defeat Vez'nan.
Have your soldiers survive the explosion of 300 demons.
Earn 30 stars.
Sell 5 towers in a single mission.
Kill 300 enemies with electricity.
Shoot 100 missiles.
Build all 8 towers specializations.
Drop 1.000 or more bomblets with the cluster bomb.
Send 1.000 soldiers to their deaths.
Defeat J.T.
Have your soldiers regenerate a total of 50.000 life.
Kill 10.000 enemies.
Teleport 250 or more enemies.
Have at least 3 Imperial Guards survive in the Citadel.
Defeat The Juggernaut
Train a hero up to max level.
Disintegrate 50 or more enemies.
Recruit max elves at The Silveroak Outpost.
Kill 10 or more sheep with your hands.
Build 150 towers.
Build 100 towers.
Earn 15 stars.
Kill 100 enemies with meteor showers.
Upgrade all basic tower types to level3.
Use Rain of Fire 5 times in a single stage.
Catch a fish.
Train a hero up to level 5.
Build 30 towers.
Kill 2.500 enemies
Open 5 information cards.
Kill 500 enemies.
Call 10 waves early.
Call all waves early in a single mission.
Call a wave within 3 seconds of the icon showing up.
Kill one enemy.