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