Complete the indicated task to unlock the achievement.

Achievement	How to unlock
And so it begins	You completed the tutorial.
Armed to the teeth	You acquired every weapon in the game.
Bonus Hunter	You opened all the bonus levels.
Curious little bugger	You talked to all the NPCs.
Golden God	You beat the game without losing a life.
Grand Champion	You beat the game
James "The Rev" Sullivan	You acquired all of the lost art.
Nice to meet you	You talked to an NPC.
Platinum God	You beat the game in Nightmare Mode without losing a life.
Through Hell and back	You beat the game in Nightmare Mode.