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