Can I beat XCOM 2 WOTC using only Skirmishers?

My attempt at beating an XCOM 2 WOTC challenge run using only Skirmishers in combat. Twitch:   / thedriftersbroadcast   Music Featured Clowning Around by Shane Ivers: https://www.silvermansound.com/free-m... Messiah by Handel:    • Händel Messiah - Hallelujah Chorus   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/