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