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