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 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.
Defeat Lord Blackburn to avoid war between kingdoms.
Defeat Ulguk-Hai the Troll Warlord.
Defeat Gul'Thak and its minions.
Do not let The Kingpin escape.
Complete all iron stages.
Complete all heroic stages.
Complete the campaign.
Shoot 100 missiles.
Find the 5 legendary lost ice-shrooms.
Snipe 50 enemies.
Defeat 10 Troll Pathfinders while they're treading on ice.
Find the elusive acorn.
Discover the hidden monster under water.
Teleport 250 or more enemies.
Capture the attention of the mysterious crow.
Kill 15 Wererats before they sicken any soldier.
Find the ninja master rat.
Help Fredo escape.
Catch a fish.
Throw 500 or more axes.
Summon 5 rock elementals in any one stage.
Polymorph 50 enemies into sheep.
Change soldiers' rally point 200 times.
Earn 45 stars.
Defeat Sarelgaz and its minions.
Sell 30 towers.
Defeat Vez'nan.
Kill 300 enemies with electricity.
Train 1.00 soldiers.
Kill 10 or more sheep with your hands.
Recruit max elves at The Silveroak Outpost.
Earn 30 stars.
Send 1.000 soldiers to their deaths.
Drop 1.000 or more bomblets with the cluster bomb.
Kill 10.000 enemies.
Have your soldiers survive the explosion of 300 demons.
Build 4 Tesla towers in any stage.
Build all 8 towers specializations.
Disintegrate 50 or more enemies.
Have your soldiers regenerate a total of 50.000 life.
Have your Paladins perform 100 Holy Strikes.
Kill 50 enemies by poison damage.
Hold 500 or more enemies with Wrath of the Forest.
Defeat J.T.
Have at least 3 Imperial Guards survive in the Citadel.
Kill 100 enemies with meteor showers.
Have your Paladins heal a total of 7.000 life.
Free the sasquatch on the Icewind Pass.
Have a single barbarian kill 10 enemies.
Kill 2.500 enemies
Build 150 towers.
Earn 15 stars.
Sell 5 towers in a single mission.
Defeat The Juggernaut
Train a hero up to max level.
Build 100 towers.
Train a hero up to level 5.
Call all waves early in a single mission.
Use Rain of Fire 5 times in a single stage.
Upgrade all basic tower types to level3.
Open 5 information cards.
Kill 500 enemies.
Build 30 towers.
Call a wave within 3 seconds of the icon showing up.
Call 10 waves early.
Kill one enemy.