The main course in this video is an Armory - the secret level of this hub. And personally i liked this course. First - if you missed somehow a weapon (especially a 4th weapon part) from your arsenal, you will get it here, as an armor. Second - that pressing buttons, which unlocks only one path. Had to think a little - and exterminate almost all enemies in cages (from Afrits to Reivers), and pass four trials in perspective rooms.
And after Armory, only grab a Heart of D'Sparil, put it where it is needed, press switch on second hub ended.
Only one more hub left to finish expansion (and whole game).
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