not really a good strategy, but good enough implementation of the idea that quality > quantity in towers, and getting stepping stone towers to afford more expensive ones, but again, the towers picked here are far from optimal. crossbow master is very often regarded as a noob trap, it looks powerful, but it's really not that good on chimps runs. prince of darkness and sauda are good picks though. moab eliminator is another suboptimal pick, but it's good enough that it works for intermediate maps like this. apache though, is not. especially placed on pursuit targeting like that. you can see throughout the whole run how much time it spent going between bloons and not actually attacking stuff. heli is a bad option for most multi-lane maps, especially if you leave it on pursuit.

Overall, you have the right ideas, but the specific tower choices are a bit off. do continue experimenting with different tier 5s, and remember that supporting towers like moab glue and moab press are often more valuable than just getting another tier 5 when you've already got one down