Oh, Right (I'm in, part 2)
I forgot that saying what tools you're using was a thing, so:
- Engine: Godot 2.1
- Editor: Atom (modal text editing is a must)
- Graphics: Leonardo and Aseprite
- Audio: sfxr or bfxr most likely
- Music: if I have time for it, probably some tracker like Modplug, Famitracker, or Deflemask