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