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.
Teleport 250 or more enemies.
Complete all iron stages.
Complete all heroic stages.
Have your Paladins perform 100 Holy Strikes.
Summon 5 rock elementals in any one stage.
Fire the Sunray 20 times.
Sell 30 towers.
Capture the attention of the mysterious crow.
Defeat Gul'Thak and its minions.
Free the sasquatch on the Icewind Pass.
Defeat Moloch the Demon Overlord.
Defeat 9 legions before they replicate.
Sell 5 towers in a single mission.
Defeat Lord Blackburn to avoid war between kingdoms.
Defeat Myconid, the Rotten Fungus.
Kill 25 Shrooms without them poisoning your soldiers.
Defeat Greenmuck and its minions.
Polymorph 50 enemies into sheep.
Have your Elves deal 10000 points of damage.
Recruit max elves at The Silveroak Outpost.
Do not let The Kingpin escape.
Discover the hidden monster under water.
Snipe 50 enemies.
Build 4 Tesla towers in any stage.
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.
Earn 45 stars.
Defeat 10 Troll Pathfinders while they're treading on ice.
Defeat Sarelgaz and its minions.
Disintegrate 50 or more enemies.
Find the elusive acorn.
Help Fredo escape.
Kill 10 or more sheep with your hands.
Complete the campaign.
Defeat Vez'nan.
Kill 50 enemies by poison damage.
Defeat J.T.
Shoot 100 missiles.
Catch a fish.
Hold 500 or more enemies with Wrath of the Forest.
Drop 1.000 or more bomblets with the cluster bomb.
Have a single barbarian kill 10 enemies.
Train 1.00 soldiers.
Kill 300 enemies with electricity.
Have your soldiers survive the explosion of 300 demons.
Build all 8 towers specializations.
Throw 500 or more axes.
Call all waves early in a single mission.
Earn 30 stars.
Change soldiers' rally point 200 times.
Have your soldiers regenerate a total of 50.000 life.
Have your Paladins heal a total of 7.000 life.
Kill 10.000 enemies.
Send 1.000 soldiers to their deaths.
Have at least 3 Imperial Guards survive in the Citadel.
Defeat The Juggernaut
Train a hero up to max level.
Upgrade all basic tower types to level3.
Call a wave within 3 seconds of the icon showing up.
Train a hero up to level 5.
Build 150 towers.
Earn 15 stars.
Kill 2.500 enemies
Build 100 towers.
Open 5 information cards.
Use Rain of Fire 5 times in a single stage.
Call 10 waves early.
Kill 100 enemies with meteor showers.
Kill 500 enemies.
Build 30 towers.
Kill one enemy.