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