Super Castlevania IV [Hard Mode] Stage 4 (NO DAMAGE / NO WHIP UPGRADE / NO SUB-WEAPONS)

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I am starting to regret having started this challenge run.
Bosses: Puweyxil (Man Eater) - 01:43 / Koranot (Golem) - 06:20

There's so much waiting here it got on my nerves. I'm not even joking I had many attempts where I I lost an entire minute at the Skeleton on the stairs at 00:33.

Puweyxil is one of the bosses I truly despise in this game. The reason I attack him with reckless abandon is because there's no absolutely safe strategy I could come up with, a piece of debris can fall at the right angle at any moment and if you try to play defensively the boss will corner you.

Koranot is much easier, but you have to be very careful not to corner yourself with the boss' attack and the rock falling from the top of the screen. Every time you hit the boss, or after a while with no provocation, Koranot will jump making rocks fall from the ceiling.