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