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