Scroll #2 is located in the Ventilation shaft just underneath the Shrine containing the Magnetic Cloak. It depicts The King defeating the Barbarian invasion with the help of the Teslamancers in the background.
Normal Collection Method Edit
The scroll is behind a stone wall that must be destroyed with the Teslastaff before the scroll can be collected.
Speedrun Collection Method Edit
Scroll 2 is collectible with Extended Blink Hitbox. You must still destroy the wall, though.