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