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