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