Come and clean the girl photo contaminated by monsters! After the purification, those photos can be collected in the photo album.
Pay high attention to avoid the monster in the screen. Little monsters can be eliminated by purification but BOSS could not be eliminated.
Hold Ctrl key and then move to draw a new edge (You will die if monster hit the line when drawing it);
Press Space to use the skill of purification.
The album photo will be unlocked when 100% of purification is achieved.