Ghost Masquerade

A gravekeeper's child was helping his father clean the graves around the graveyard. This child found a half of a mask, sealed until now, which opened a hole into a cript. This cript was the one where an old noble from the far past lied, waiting until someone found the other half of his mask to achieve full immortality, and revert the state of his body, now rotten.
Is a Platform game with elements of a BulletHell and some puzzles.