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