An Ordeal Badge is a special item found on many Missions in Kingdom Hearts 358/2 Days. These badges are used to unlock a special challenge mode for each Mission during and after Mission 20. Ordeal Badges are blue, with a silver border, distinguishing them from Unity Badges.
Completing a challenge unlocked by an Ordeal Badge leads to a reward in the form of Challenge Sigils. Sigils can be traded in at Organization XIII's Moogle Shop for additional, powerful prizes.
Any available challenges prior to Mission 20 are unlocked automatically upon reaching Day 71.
There are rarer, even more difficult challenges that must be unlocked using an Ordeal Blazon instead of an Ordeal Badge.
