Faster Shooting: £200
Blade Shooter: £300
Shoots blades. Popping power +2, Layer +1
Ring Of Fire: £1500
Shoots fire. Can pop lead. Popping power +357
Shoots 8 beams of fire with infinite range in addition to normal Ring Of Fire.
Tack Awesomizer: £500
Popping power x2
Super Range: £200
Barbed Tacks: £600
Zeppelin Piercer: £4000
10x damage to MOAB-class bloons.
Note: Every upgrade affects everything but Ring of Fire but the speed boosts.
Tack Sprayer: £600
Fires twice as many tacks. Speed x1.1.
Rotating Tacks: £1200
Tack Shooter rotates to get the most popping power for its tacks. Speed x1.2.
Bloon Seekers: £2000
Tacks seek out bloons. Speed x1.3.
Bloon Targeting: £5000
Fires tacks at the bloons themselves. Every so often fires tacks at the first(or whichever target priority) 16 bloons. Speed x1.4.