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