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