The End?

To collect The End? achievement, collect 1 Extra Cursed Hazel Pigrum card.

The End? achievement is the first way to 'beat' the game and can be collected one of two ways:
 * Collecting an Extra Cursed Hazel Pigrum from Shadow Pack Plus.
 * Collecting 100 Cursed Hazel Pigrum and completing the Cursed achievement.

Reward
When collecting the reward, it will take you to the Credits. The credits take around 2 minutes and cannot be exited. A tip is too equip idle cards because they will still be active. This will also unlock the credits button in the stats.