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