Clear the Prologue chapter of the game.
Clear the Mansion chapter of the game.
Clear the Mine chapter of the game.
Clear the Lab chapter of the game.
Achieve an "A" rank upon beating the game.
Beat the game on Hard difficulty.
Beat the game with both partner characters alive.
Beat the game as Jessica.
Beat the game as Nathan.
Beat the game without saving.
Beat the game without using healing items.
Kill the first boss using the spike trap.
Kill the second boss with explosives.
Kill the final boss with the radio signal.