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