Bloons Tower Defense 5 - Daily Challenge May 27, 2013 (Well That Escalat...

Well That Escalated Quickly - Beat Ice Rink on Easy with 20 Lives. "With 7 towers max. Beat 7 rounds of boosted bloons. By Kim Davis."

Video is on 1.5x speed
No Agent, Premium and Speciality
(Please comment if you have better strategy)
For more walkthrough: http://bloons-tower-defense-5.blogspot.com