Bloons Tower Defense 5 - Daily Challenge June 7, 2013 (Vassles)(NASPFRILLS)

If the Dev happen to fix the 4 tower max, you can get more sniper or more boomerang after 4 dart monkeys.

Vassles - Castle rounds 1-50 with the 6 cheapest towers. Four of each tower. Bloonberry bush provided. By Sniper 355

Video is on 3x speed
No Agent, Premium and Speciality
(Please comment if you have better strategy)