Kingdom Hearts 358/2 Days - Complete Walkthrough - Missions 42 - 93

Day 149 - Different mentalities

If you got 100 points in Mission 36 in Philoctetes training then talk to Xigbar to get some Bronze.

A new world to visit, but luckily no exploration missions this time. You will start immediately with the collection of hearts in the City of Halloween, a very fast mission since you just need to go through the entrance, walk around the square and then go to the cemetery: help yourself with the explosive sticks that you find around to blow up air the Heartless faster. Eventually you'll get to know Vado, Vedo, and Prendo, after which there will be a cutscene featuring Xion.

Day 150 - Fear

We will start with another enigmatic movie where one of the two hooded warriors will show his nature: it is impossible not to recognize him.

You will have to enter from a secondary passage to the left of the main door, after which cross the whole area to enter the ballroom on the upper level: jump down to make a Hearttless appear larger than normal: it will fall with a few hits of Thunder magic and with the help of Xaldin. Now go to the West Room and the Heartless you were looking for will appear in front of you.
Your opponent is powerful enough and hitting him in the three strategic points will be useless to say the least; use magic as long as you can and then start making his attacks your weapon. When he makes a red ball appear in his left hand, start moving frantically so as not to get caught by the Antima magic, when he charges white's right hand beware of the Heartless that will sprout from the ground. Instead, when his heart turns white get ready with your parade: he will throw at you some white balls that you will have to parry and return to the sender doing him a lot of damage. Even playing this way the Heartless will fall, albeit slowly.

Day 151 - Suffering

If you have opened at least 130 chests so far, talk to Axel twice to receive a Shield Technique.

Double mission for you: you will have to collect the emblems scattered around the city and then kill the Slavina, a monster similar to the one encountered in mission 17, but with a little energy. You'll find it in the Sand Ring, and to get there you'll have to activate the usual three switches in the underground passage. When you have found it, watch out for its attacks from above, as they will not only sweep you away but also decrease your energy. Fortunately, Xion, with his Keyblade, turns out to be a good ally: avoid magic except the Thunder that hits from above and has a good percentage of success. Head back to the castle to watch another cutscene between Riku and Xion.

Day 152/153/154/155 - The wrong keys

Talk to Xaldin to get a combo technique and then to Luxord if you have exceeded 50 points in mission 37. He will unlock mission 49 but it will only appear on day 153, so you will have to complete this mission first.
Now that you've unlocked the Great Jump, you can go back to collect some lost items:
Mission 15 (Day 26): In the streets of Agrabah, go to the top of the building in the southwest.
Mission 16 (Day 51): Diamond and Formula Elixir in the same spot as Mission 15.
Mission 19 (Day 51): Streets of Agrabah on the bridge to the west.
Mission 32 (Day 97): Company crest in the streets of Agrabah on top of the building in the southwest
Mission 34 (Day 97):