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