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