The learning curve is there—you will lose on Round 63 (the Ceramic rush) and Round 95 (the DDT swarm). But learning to prepare for those moments is what makes the game so satisfying.
Now go pop those bloons.
Do not sleep on the Monkey Sub . The Submerge & Support (middle path bottom crosspath) reveals camo bloons globally and is the cheapest way to survive Round 24. Also, remember the wise words of the tutorial monkey: "When in doubt, use more Dart Monkeys." Bloons TD 6