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.
Defeat Moloch the Demon Overlord.
Defeat 9 legions before they replicate.
Defeat Myconid, the Rotten Fungus.
Kill 25 Shrooms without them poisoning your soldiers.
Defeat Greenmuck and its minions.
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 Ulguk-Hai the Troll Warlord.
Find the 5 legendary lost ice-shrooms.
Defeat 10 Troll Pathfinders while they're treading on ice.
Complete all iron stages.
Complete all heroic stages.
Have your Elves deal 10000 points of damage.
Drop 1.000 or more bomblets with the cluster bomb.
Find the ninja master rat.
Defeat Sarelgaz and its minions.
Defeat Gul'Thak and its minions.
Shoot 100 missiles.
Find the elusive acorn.
Teleport 250 or more enemies.
Help Fredo escape.
Do not let The Kingpin escape.
Disintegrate 50 or more enemies.
Snipe 50 enemies.
Have your Paladins perform 100 Holy Strikes.
Kill 10.000 enemies.
Build 4 Tesla towers in any stage.
Kill 300 enemies with electricity.
Earn 45 stars.
Change soldiers' rally point 200 times.
Sell 30 towers.
Complete the campaign.
Defeat Vez'nan.
Hold 500 or more enemies with Wrath of the Forest.
Kill 50 enemies by poison damage.
Polymorph 50 enemies into sheep.
Summon 5 rock elementals in any one stage.
Have your soldiers regenerate a total of 50.000 life.
Have your soldiers survive the explosion of 300 demons.
Have your Paladins heal a total of 7.000 life.
Earn 30 stars.
Throw 500 or more axes.
Build all 8 towers specializations.
Train 1.00 soldiers.
Defeat J.T.
Train a hero up to max level.
Send 1.000 soldiers to their deaths.
Build 150 towers.
Fire the Sunray 20 times.
Train a hero up to level 5.
Free the sasquatch on the Icewind Pass.
Kill 2.500 enemies
Have a single barbarian kill 10 enemies.
Upgrade all basic tower types to level3.
Build 100 towers.
Sell 5 towers in a single mission.
Defeat The Juggernaut
Have at least 3 Imperial Guards survive in the Citadel.
Earn 15 stars.
Kill 100 enemies with meteor showers.
Recruit max elves at The Silveroak Outpost.
Build 30 towers.
Kill 500 enemies.
Catch a fish.
Open 5 information cards.
Call 10 waves early.
Use Rain of Fire 5 times in a single stage.
Kill 10 or more sheep with your hands.
Call all waves early in a single mission.
Kill one enemy.
Call a wave within 3 seconds of the icon showing up.