- From the start of the level, get into the first room to your left. On the back is a vending machine. Jump on top of it and try to open the wall to make the machine lower, revealing the secret.
- In the room where you open the painting to shoot the switch that lets you proceed through the level, look in the inside part of the desk to spot a button. Pressing it will make a bookcase in the corner slide, revealing the secret.
- Near the Red key door are some boxes (also, take note of the nearby air vent, I'll be addressing it later). One of them has no lid, and jumping inside it (where there's a Missile Launcher) counts as a secret.
Level 3: Emergency Room\Gallery
|Twin Dragon Levels|
|Level 1: Wang's Home • Level 2: City of Despair • Level 3: Emergency Room • Level 4: Hide and Seek • Level 5: Warehouse • Level 6: Military Research Base • Level 7: Toxic Waste • Level 8: Crazy Train • Level 9: Fishing Village • Level 10: The Garden • Level 11: The Fortress • (Secret Level) Prison Camp • Level 12: The Palace|