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