Jumper makes you hit the wall I had thought.
Nope, you can still get under the wall, and Jumper will increase your air time. Jumper just isn't enough by itself, is all. Trust me, Jumper/Hyper Dash combo is my preferred unarmored/Shadow Armor method for that pit, I use it all the time.
As for Hyper Dash, naked unarmored X can't get it.
...why not? The secret area of Inami Temple is a hell of a lot easier to reach and navigate unarmored than the death trap that is Jumper's location. And there's no way you're getting to Gate's Lab 2 unarmored without that (Jumper and Ice Burst to clear the spiked wall).
So I need to get both Ground Dash & Magma Blade? I can't do it with just 1 of them? Also, I don't need Speedster?
You do not need Speedster, although it does help. Not sure about using one single weapon. Could work, I suppose, just more tedious, since you have to pause twice per weapon use (once to cancel and once to switch back; using two weapons you can rotate between them and thus pause once between each use).
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