The 3rd Path upgrades are just like those of the other two paths, except they never have an activated ability. You do not unlock these by leveling up. Instead, you must buy them with MM. You can buy them individually or buy all of them at once for 12500 MM. Dart Monkey Flechette Darts $500 Darts now break into 2 other darts upon impact. Super Flechette Darts $900 Small darts now break into 2 each. Main dart can pop 2 layers off of 5 bloons, small darts can pop 1 layer off of 3 bloons, tiny darts can pop 1 layer off of 1 bloon. Homing Darts $1600 Dart Blaster $3250 Boomerang Thrower Speedy 'Rangs $700