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