Mixing in some retro looking visuals, with fast-paced travel using a grappling hook it certainly looks like a good game to challenge your friends and beat their times. It has no speed limits either, so your speed depends upon your skill with the hook.
It will have four chapters, each featuring 20 levels and apparently some secret levels to unlock as well. Compete worldwide for the best times on the leaderboards and there's even a dedicated speedrun mode.
What's interesting, is that it will have the Ghost system, so you will be able to see others in the game based on their times. I'm quite competitive when it comes to games like this and there's only so much I can motivate myself to keep pushing, but seeing a Ghost will really help.
On top of that, it will have custom level support. I look forward to seeing what the community can come up with and smashing sometimes!
It's due for release on February 6th on Steam. It will have Linux support, as stated on Steam and their presskit—sign me up!