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