Here is the full list of all 20 50 Waves Hero achievements.
Thank you for launching 50WavesHero for the first time.
I'm ready to stop the devil.
Hero cleared all the waves.
You lost the game because your hero died.
You lost the game because the castle was destroyed.
Win with the Stone of Life
Win with the Stone of the Sun
Win with the Stone of the Moon
Win with the Stone of Steel
Win with the Stone of Fire
Win with the Stone of Grass
Win with the Stone of the Water
Win with the Stone of the Earth
Win with the Stone of Wing
Win with the Stone of Blood
Win with the Stone of Money
Win with the Stone of Chaos
Win with the Stone of Light
Win with the Stone of Darkness
Win with the Stone of Repair