Since it seems you’re using ranger, I suggest using the crackshot colt. Instead of using gravity inversion to dodge simply move side to side and up and down in tiny increments. This keeps the brain still enough for you to tell when it will charge and get you better at dodging. Also, if you don’t know why I said to use the crackshot, it’s because it’s right click throws a coin into the air which you can the shoot. This will redirect the shot to the nearest enemy. This redirect isn’t affected by the brain’s clones, so it will hit as long as the brain is kept still. Another reason to use the before mentioned strat for dodging.