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