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