Once you unlocked the following Special weapons they are located at the corresponding locations:
WEAPON - LOCATION Beam Saber - At the end of the hallway where you get the bookstore key; hanging on the door. Flamethrower - In Helen's Bakery (where you get the tongs); on the counter. Infinite Ammo Sub Machine Gun - Immediately after exiting out of the bathroom window (after the start of the game) go left; it is at the dead end. Heather Beam - After obtaining it, you always have it. You can use it when no weapon is equipped.