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