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