Seems nice. I don't agree with all of it's deviations from Lua, which unfortunately breaks portability, but I get it.

I wish C was scriptable, versus Lua being compliable, but this is really cool.

C kinda can be used as scripting language with MIR project https://github.com/vnmakarov/mir

It released version 0.1 just a few days ago, and I've successfully used it as an alternative and fast C compiler with Nelua.