Mission 50: Vanquish the Heartless threat

Mission 50 for Kingdom Hearts 358/2 Days sends Roxas to Beast's Castle to eliminate another Heartless.

Regular Mission
Vanquish the Heartless Threat.

Story Summary
Roxas is sent to Beast's Castle to eliminate yet another Heartless boss. After defeating the Heartless threat, Roxas learns of love- through the Beast's unyielding protection for Belle.

Mission Walkthrough
You start in the Ballroom, work your way around the room defeating Heartless and opening the two chests to obtain a Hi-Potion and Cure Recipe. Exit the Ballroom to reach the Entrance Hall, immediately jump up to reach the Ordeal Blazon floating above the steps. Repeat the same process you took in the Ballroom- defeat Heartless and unlock the two chests; this time, you'll get an Ether and Bronze. Leave the Entrance Hall and go to the Courtyard. Here you will find the Unity Badge to the right of the entrance (near the secret entrance). Proceed towards the gates to reach the Bridge, it is here you will find the Heartless threat and the Ordeal Badge.

Focus on defeating the Infernal Engine first; after it is defeated, run to the end of the Bridge and get the Ordeal Badge. With the boss defeated and all treasures obtained, its time to RTC. Return back to the Courtyard to see a cutscene between the Beast and Belle, showing their love for each other. After the cutscene is over, the mission will end automatically.

Main article: Infernal Engine

Video
Video walkthrough here.