Here is the full list of all 20 Mecha Blade achievements.
You started the game!
You meet with Uriel!
You defeated the Father!
You convinced the Bishop...
Now where am I?
You made the deal...
An Ally to the Goblins
You been tricked!
Nature bends to your will
You hired an ally
The True Colors have been revealed!
You have changed....
I AM FUTURE
Unlock the hidden romance scene
Defeat the Lord of Darkness
Defeat Zebul
God is dead, AND WE KILLED HIM.
You have served the Lord well.
LONG LIVE THE NEW WORLD!
You killed them all, but what what cost?