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