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