[BTD6] Boss Rush 3rd Island 140 Kills (Bloonarius- Winter Park) 

The general strat is basically going for tack spam into pmfc army with debuffs. And then building a d40 dart paragon. After that just farm pops for a d20 boomer paragon. You can spend the remaining money on other stuff as u want.
I bought boomergon pretty late in this run. Could've gotten him earlier. (once bloonarius entered his range)
Video is at 2x speed. 3x speed after getting dart paragon.