Insomniac Games' Fuse (formerly Overstrike) Catch-all
Anybody remember Overstrike from E3 2011?
Well it's been renamed "Fuse" and is apparently shaping up quite nicely. Sounds like they're optimistic about the 4-player co-op as well as the single-player. There are multiple articles popping up today.
EDIT: Insomniac has posted links to all the previews here.