This is a story-based achievement that will unlock upon defeating Witchcraft Mary.After working your way through the various rooms and defeating the various enemies, you will come face to face with Witchcraft Mary herself. The battle against Mary has three stages.
First StageFirstly, there will be an army of
Hobbes. As in one of the previous rooms, the Hobbes are coloured. After defeating a Hobbe, they will change in to another Hobbe of another colour. (Red to Green, Green to Blue). The Hobbes aren't too difficult to defeat, but if you find you are having some trouble, keep rolling around to find some space and regain your health by using potions/food.
Second StageThe second stage of the battle sees Mary transform into a large
Hollow Man. As with one of the previous rooms (notice a pattern here?), the large Hollow Man will spawn smaller Hollow Men. The smaller Hollow Men can only be defeated in the light. However, you only need to defeat Mary (the large Hollow Man). This battle is not paticularly difficult. Just drawn the smaller hollow men in to the light to defeat them, and spam with range attacks on Mary.
Third StageThe third (and final) stage of the battle sees Mary transform in to a
Silver Balverine. She will be accompanied by several Poisonous Balverines. This is probably the most difficult of the three stages, especially if you have not upgraded your Hero. Keep rolling around, stopping every while to shoot with your gun. Eventually, you will defeat Mary, and a cut-scene begins.
The choice that you make after defeating Mary
does not affect the achievement. You can either choose to Spare her or Kill her. The achievement will unlock regardless of this decision.
Edit: It is possible that this must be done in your OWN game. You will not unlock the achievement as a guest player in somebody else's game. Thanks
DTI April.
Please either comment below or send me a Personal Message if you have any comments or improvements for my solution.