However, the talk post-game has centered around their manager, with Bilic likely to get the sack in the coming days.
"The boys dug in, we fought for 95 minutes. They had a lot of the ball but we knew that," Johnstone told Amazon.
"The lads ran their socks off but I was there to make a few saves when needed. The two headers were close and I just got a leg to them and kept them out.
"The quality of the balls they put in is unbelievable. The lads are buzzing with that result. It's a massive game coming here.
"We love the manager. We knew getting promoted it would be difficult, we're not hiding away from that."