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