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