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