Fully Unlock the Olympians' Codex entries

Visit all places on all maps.

Burn up two zombies at the same time with the lighter.

Purchase a house in one of the cities.

Finish the game in five hours.

Finish the game with Jill and Chris.

Finish the game without saving anyone using Jill.

Break into the laboratory using Jill.

Defeat Black Tiger.

Defeat a Hunter.

Defeat a Crimson Head prototype1 using Jill.

Burn up a zombie.

Finish the game using only your knife (no lighter, Defensive Items, and stomping zombie heads).