and me -> be, as in:
has to me analized -> has to be analyzed

I figured this out save for the fact that unshackle was an implicit global function. I erroneously concluded that the tests were missing a variable declaration.
I see now that it actually says "already existing function" in the instructions. I suppose that is clear enough, so I cannot complain. But maybe more explicitly writing something like:
"This function needs to call an already existing function unshackle in the global-scope with the beast to release."

Anyway, nice kata!

Best Practises if your goal is to do a code golf hole in 1. Immediate dismissal if you're going to write maintainable code :)

I like this one best. Your "L?(RL)*R?" is elegant - better than the currently upvoted version: "(LR)*L?|(RL)*R?)", of which my solution is a variation.

for JavaScript: "Expected: 13.333333333333334 is above freezing temperature, instead got: 13.333333333333332 is above freezing temperature"

Kudos for clarity / readability!

Definitely.

Why "i"? @ and . don't have upper-/lowercase versions.

Mistake: /\w/ should be /[a-zA-Z]/. Admin: Please replace if possible!