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.
Have your Elves deal 10000 points of damage.
Defeat 9 legions before they replicate.
Capture the attention of the mysterious crow.
Defeat Lord Blackburn to avoid war between kingdoms.
Discover the hidden monster under water.
Kill 15 Wererats before they sicken any soldier.
Find the ninja master rat.
Defeat Ulguk-Hai the Troll Warlord.
Find the 5 legendary lost ice-shrooms.
Defeat 10 Troll Pathfinders while they're treading on ice.
Find the elusive acorn.
Do not let The Kingpin escape.
Have your Paladins perform 100 Holy Strikes.
Drop 1.000 or more bomblets with the cluster bomb.
Build 4 Tesla towers in any stage.
Summon 5 rock elementals in any one stage.
Complete all iron stages.
Kill 50 enemies by poison damage.
Complete all heroic stages.
Have at least 3 Imperial Guards survive in the Citadel.
Sell 30 towers.
Sell 5 towers in a single mission.
Defeat Greenmuck and its minions.
Have your Paladins heal a total of 7.000 life.
Kill 300 enemies with electricity.
Defeat Gul'Thak and its minions.
Teleport 250 or more enemies.
Defeat Sarelgaz and its minions.
Snipe 50 enemies.
Disintegrate 50 or more enemies.
Polymorph 50 enemies into sheep.
Help Fredo escape.
Complete the campaign in Veteran mode.
Complete the campaign.
Defeat Vez'nan.
Shoot 100 missiles.
Have your soldiers survive the explosion of 300 demons.
Fire the Sunray 20 times.
Throw 500 or more axes.
Earn 45 stars.
Hold 500 or more enemies with Wrath of the Forest.
Build all 8 towers specializations.
Defeat J.T.
Earn 30 stars.
Have a single barbarian kill 10 enemies.
Free the sasquatch on the Icewind Pass.
Defeat The Juggernaut
Have your soldiers regenerate a total of 50.000 life.
Train a hero up to max level.
Kill 10.000 enemies.
Change soldiers' rally point 200 times.
Train 1.00 soldiers.
Send 1.000 soldiers to their deaths.
Build 150 towers.
Kill 2.500 enemies
Build 100 towers.
Earn 15 stars.
Upgrade all basic tower types to level3.
Recruit max elves at The Silveroak Outpost.
Open 5 information cards.
Train a hero up to level 5.
Use Rain of Fire 5 times in a single stage.
Call 10 waves early.
Catch a fish.
Kill 500 enemies.
Kill 100 enemies with meteor showers.
Build 30 towers.
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.