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