A saviour has arisen Achievement
A saviour has arisen20
Gather 100% of the Gaia
There are a total of twenty levels in the game, twelve Abyss and 8 Nightmare levels. Across the twenty levels, there are a total of 136 Gaia. Collect every Gaia in every level for this one. You can see where they are (but not necessarily how to get to them) by looking for the light sources, as they glow brightly. None of them are particularly difficult, you just need to make sure you explore the levels fully before finishing.