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