Blaster-3 has trapezoid guns which means fast reload guns. Blaster-3 shoots more bullets with a much more spread and the trapezoids shoots much bigger bullets than the Blaster-2. Blaster-3 bullet damage increases by 1/5, the penetration increases by 1/2, and bullet heath does not increase. The range is very low only if you do not increase the bullet speed. The bullet speed increase increases by 1/2.
Blaster-3 has 50% body damage. It has 118% max heath. It has a circular body. It was added when the blaster branch was added. There was another upgrade from blaster-2. It was mega blaster-2. It was removed at 2020 May 8th.
Blaster-3 could not fight drones, swarmers, sunchips, and pentagon drones because as I said the damage, penastration, and heath of the bullets are pretty low. But the drone that it could kill fast is the sunchip drone but since there is more drones there is still a risk. There are tons of sunchip drones that could kill it. It could not kill long range towers. The way to survive is TO RUN or if your bullet speed was low and bullet upgrades could help you plus reload. It could not resist a steamroller dominator and destroyer dominator plus bosses and strong tanks in the game.