I guess the big question now is: Is it better to attack THIS turn and shoot player 1 along with the zombies, or allow them to finish off player 1 and come to us where we fight hand to hand?
If we move forward, we use up actions on moves, but shoot from a distance. If we stay, one zombie will finish off player 1 and the rest will move. The runners can reach us in 1 turn and we would be in hand to hand combat only, but with just 2 zombies, as the first will have used its turn to attack player 1.

Then again, the zombies can miss and more would need to use their turn to attack!