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