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