Complete the indicated task to unlock the corresponding costume.

Barbarian: Collect all Stamina Campaign signs.
Earthquake: Find the secret item in Port Alex.
Fire: Find the secret item in Port Alex.
Frog: Complete the Lahar rescue on Stage 15 in less than 25 seconds.
Heavy Rain: Complete the game.
Hurricane T-Shirt: In Stage 18 "Mud And Mercenaries", examine the door to the female toilets multiple times.
Mech Ray: Complete Real Disaster mode.
Rescuer uniform: Complete all 45 rescues.
Samurai: Collect all 100 titles.
Tsunami: Find the secret item on the ferry.
Volcano shirt: Save Iris from the molten lava, then jump across the small gap to find the shirt in a barrel.