Hellblade: Senua's Sacrifice

This achievement is story-related and cannot be missed.

At the end of the game, you will confront Hela once more and partake in one final battle. This finale consists of three "phases." In Phase 1, you must defend yourself from an onslaught of various variants of enemies. In Phase 2, you will fight "shadow" variants of the three main bosses you previously encountered; dodge their attacks and use your focus ability when available to cut them down quickly. In Phase 3, succumb to the enemies and the battle will end, thus unlocking the achievement.