That's What Those Do! is an unlockable achievement in Crash Bandicoot N. Sane Trilogy and for the remaster of the first game. To unlock it, the player must collect 3 of either bonus face token, and enter a portal pad to the bonus round.
The player can find bonus face tokens from crates, as they are where they are mostly from. Once 3 of a type of face token is collected, the player can go to the bonus. The three available tokens are: