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