"Join the game designer of GRAW and Halo Reach to help create the spiritual successor to the original Rainbow Six and SWAT4."
Right now the game is nothing like R6 or SWAT4. The Kickstarter money was meant for a demo to convince a publisher to back the project. They found a publisher and made this "game".
I'd advice against picking this up if you're looking for something similar to the games name-dropped by Serellan in their Kickstarter campaign.
It feels like a pre-alpha build with mock-up menus, placeholder animations/characters, and the AI is terrible. I'm sure they'll attempt to patch and add stuff eventually; but in my opinion they aren't even close on release. There's nothing tactical about the experience delivered in this. They would have come a long way if they did some research and just copied what made R6 (1998) a fan favorite and built from there, but Takedown has less options, feels generic and it seems like someone wanted to make a game but abandoned it.