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