- Sony Game Director Mark Cerny
shared details on unlockable characters and challenge modes in Knack on PS4 below today.
To quote: Knack launched alongside PS4 in every territory, and now that there's been some time for the players to get up to speed on our game, I wanted to talk a bit more about the unlockable features waiting within.
As you probably know, there are hidden treasure chests in secret rooms scattered throughout the story which contain random items.
Some of those items are parts of gadgets that will help Knack in his quest; however the treasure chests also contain more exotic items called Crystal Relics.
There are six different types of Crystal Relics, and if you collect enough of one type, you can unlock a special Knack that can be used when replaying the game, or in one of the challenge modes that you unlock upon beating the game.
For example, collecting 15 Ruby Relics unlocks Vampire Knack, who has stronger attacks, but also a weakness - he's slowly melting, Parts drop off his body and he loses health as he fights. He can replenish that health by defeating enemies, so in a sense he's sucking their energy into himself!
So as soon as you collect the required 15 Ruby Relics, you can start the game from the beginning, playing this time...