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