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