Anything else will not be enough, but on-loan striker Walker insists the situation is more likely to pose problems for John Still and his side.
"What a fantastic finish to the season," he told Shrewsbury's official website. "It's a really big day for everyone involved at the club.
"The pressure's on them in many ways because a draw will be enough for them and sometimes those kind of things can work against you. They might be tempted to sit back and get the draw they need, or they might come out and go for the win.
"It's difficult because they're the ones in the play-off place going into the game so the pressure is more on them than us. We can go there and play our football, and if we play to our potential we are capable of beating anybody."