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