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