i need help. i cant complete the mission on day 171 mission 50.

I don't remember, is that the one in beast's castle, the big ram outside on the bridge? If that's it, then you're supposed to attack when it sticks out it's battering ram thing, it's round with spikes.

Maybe it would help to raise a level... But mostly, it's easy if you focus on dodging the attacks from above (using air slide). When it sticks out something that resembles a... Rocket (?) from it's mouth, then your attacks will do more damage. When it charges, blocking won't work, so try to jump around the edges and avoid it. Otherwise, just bring potions and a lot of casts of cure. I installed Fencer's Ring and used the Nimble Gear +4, with one ability panel (which allows you to dish out increasingly stronger combos when you continue yours) and two power panels. Oh; and when the strange bombs (the black and red ones) roll out, then you should block, and they'll knock over and destroy the heartless located on the top of the boss, and you'll be able to attack practically uninterrupted for a little bit. This is my best advice--good luck.

hmmmmm, i just hit the machine as many possible chances as i could, you only truely need to keep ur guard up when the mouth opens and just keep dodgeing and hit the thing thats kinda spikey looking, and when the light turns white run the opposite direction next to the walls so it wont hit u

I don't under stand how you guys can kill it and I can't