I was born during the second half of that season so my accounts are all just from watching old footage, hearing interviews, etc. but that team was tough. Fotiu, Hospodar, Kotsopolous, Beck, etc. could all fight.
They tuned out Fred Shero and Craig Patrick replaced him with a verbal agreement in place that Herb Brooks would finish coaching in Europe and take over the next season.
They had a horrible start with many injuries (Dugauy missed a lot of time that year) and they pulled it together in the second half.
Back in those days the playoff format was #1 vs. 16, 2 vs. 15, etc so you had some cool and wacky playoff matchups.
They played the Kings is round 1 who were a great regular season team and heavily favoured and apparently from interviews with Fotiu and Greschner, they were laughing at the Rangers, so the Rangers literally beat them up. The clip is on Youtube but that was pretty much the entire series.
They beat the Blues in round 2 and then in round 3 ran into the Islanders.
I've posted it here about 5-6 times but if they had a healthy JD and he pulled his magic in 81 instead of 79, they go on to destroy Minnesota in the Finals and win the Cup.