I’m in too!
I decided that i’m not that much tired, and i think i’ll give it a go 
So here’s what i’ll use.
Lang: Haxe & NME
I’ll be using my own tools and libraries, or some projects from github.
sheet-splitter – http://www.ludumdare.com/compo/2013/04/25/ive-a-tool-for-you/
sprite-manager
Maybe a tile editor that i’ll pick from Tools section.
I don’t know about sound, and i don’t know if it’s a compo entry or jam entry, don’t push me !
Anyway, be sure to check the link above, i think a lot of people will find that tool useful.
(P.S. all my libraries are contained in github > https://github.com/onatbas);
Happy ludum dares! and may the odds be ever in your favor !
