“You appear as Heather at the same place where James in sh2 went to the city, while you browse through location you met Valtiel which tries to open gateway to second part of map for you, in order for him to do it you must collect bunnies scattered all over map, the more bunnies you pick up the more monsters come at you. When you pickpup all bunies you run to the final door and part2 starts. Also during final run to the end Alessa appears and shows you the direction you should go towards the end.
The events of this game happen after Silent Hill 3, when Heather tries to leave Silent Hill but for some reason she must go back to it.”
This is free fangame