Mission 92: Xion

Mission 92 for Kingdom Hearts 358/2 Days takes place after Roxas leaves Organization XIII, the Nobody faced with the challenge of defeating his former friend, Xion.

Regular Mission
Defeat Xion.

Story Summary
Roxas realizes what a fool he was for leaving Organization XIII. A hooded Xion approaching him with Sea-salt Ice Cream on the Twilight Town Clocktower, she reveals to the Key of Destiny that it is time she "play her part" and absorb him to further Xemnas's plans.

Mission Walkthrough
Day 357 takes Roxas to Twilight Town. Go to the Station Plaza, and save for the last time. Purchase any needed Panels at the Moogle Shop near the far edge of the area. Walk up to the tower and choose to head up. A CG cutscene will play, the boss battle with Xion's four forms beginning.

Challenge Mission
Obtaining 3 Challenge Sigils is child's play, so long as you jump to avoid Xion's attacks.

This one should be easy with the Zero Gear and 3 Ability Units. Use Limit Breaks to your advantage as to get through the first three battles quickly, and use a Limit Recharge in the fourth battle. Know how to predict Xion's attacks and avoid damage as often as possible.

Treasures
There are no treasures available in this Mission.

Video
Video walkthrough here.