I watched their game with BYU. They solely rely on their defense and their line is scary. They don't have an offence. They try to just manage the amount of possessions you get and try to keep you backed up on field position. They only pass because they have to, just to try and open up the run. They did lull BYU's secondary into being out of position a couple of times but the NIU receivers dropped the passes. The game came down to a couple of penalties. BYU was called for pass interference on 3rd down that lead to the only scoring drive NIU had. BYU had a 1st and goal in the 3rd quarter but had back to back false starts that lead to the 2nd FG.
NIU is similar to our 2015 team in that they play their own game and let you lose it for yourself.