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