I’m In!
Whether I’ll stick closely to the theme or not, well, probably not. 
Engine/Language: Most likely GameMaker and GML. Considering Unity but it probably won’t happen.
Tools:
Photoshop / Paint.net / Maybe Graphics Gale.
Probably SFXR for sound.
Tiled, as maybe the Tiled2GM Importer
http://gmc.yoyogames.com/index.php?showtopic=583235
http://jugglingcode.com/projects/GMSTiled_0_9_7_0.zip,
or a Tiled GM Importer I wrote of my own utilizing the SimplXML scripts for GameMaker (hosting here)
Livestream: Potentially, at twitch.tv/AngryMobofSteve
Twitters: http://twitter.com/AngryMobOfSteve
Caffeine of choice: Probably way too much Coke and Rockstar Juiced.