I just repaired a Bally MPU with major battery damage. U8 had zero pads remaining. I had to jumper quite a bit on the backside (solder side), but it is repaired. I make all my jumpers neat and laid out as organized as possible. The battery acid also dropped on to the lamp driver below. Oh joy. The lamp driver is repaired too.
You can do it. Take your time and double check traces / vias and ohm things out as you go along and when you think you are finished.