Boss Time Attack Challenge

Boss Time Attack Challenge (ボスタイムアタック, Bosu Taimu Atakku^?, lit. "Boss Time Attack") is a series of four quests in Kingdom Hearts Unchained χ / Union χ, in which players can obtain Event Coins to unlock Board #1: Sora & Chip & Dale and Board #2: Jewels. It was available from April 15 to 30, 2019 in both versions.^[1]^[2]

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