You actually put the answer to how to unlock skeleton, in the thumbnail; you're such an incredible person, you make feel so grateful that I see your video after all. We need more people like you, thank you.
To be fair, you have to have a very high IQ to understand melting. The gameplay is extremely skill-based, and without a solid grasp on gaming most of the skillshots will go over a typical gamerboi's head.
you have to die while the circle is still there, not to what the circle raises. did it earlier today so nah, not patched out. i find it easiest to do by unlocking golden nuke launcher then starting with that and taking oasis. it's a threefold plan: 1. you don't spend too much time on a run to end up dying immediately, since you take a shortcut 2. you have a weapon that can kill you on demand in a circle, guaranteed 3. youre guaranteed to have a weapon that's powerful enough to deal with palace despite the reduced weapon tiers bc you took oasis
You'd probably have a hard time trying to get killed by the little monsters, as you would kill them if they get too close. A workaround would be bringing an explosive weapon with you, tho it'd better not to pick gamma guts at all!