Can I beat XCOM 2 WOTC using only Specialists?

My attempt at beating an XCOM 2 WOTC challenge run using only Specialists in combat.

XCOM 2 Challenge Run Playlist: Can I beat XCOM 2 WOTC using only SPA...

Twitch: Twitch: thedriftersbroadcast
Discord: Discord: discord

Music Featured
He’s Gone [Slow] by The White Piano Key: https://thewhitepianokey.bandcamp.com...
What Can Never Be by The Tunnel: https://thetunnelsf.com/music#apparit...
Why We Lose by Cartoon (feat. Coleman Trapp): https://ncs.io/whywelose

Dark Fantasy Studio tracks can be found at http://darkfantasystudio.com/albums/