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