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