Here is a quick explanation of what makes the game unique and differentiated from other current first person shooters. People have compared it to Reflex (mainly) a few times. Like any two arena games there will be overlaps, but this video should show how it is conceptually unique from any Quake style games.

https://www.youtube.com/watch?v=f5dqjoDvGmo

Edit: New visuals & feature listing: https://www.youtube.com/watch?v=pMiAvFB_OJI

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Originally linked video before the edit:
https://www.youtube.com/watch?v=Pbl8n4LHbTI