antistall basically is just making round shorter

to make the round shorter and have a harder antistall, u need to pop at least the first layer of the bloons sent (eg round with blues, red and blues, pop all reds and first layer of blues at least to have high antistall)

good way to antistall with powers is just spiking the front.

good tower is engi or heli. sprockets antistall really well and u can get a 2:36 on round 10

heli is also pretty good with 4 pierce and targeting at the front of the map.