Read More:He had earlier pled guilty to an aggravated assault charge having initially faced an attempted murder allegation. Lord Scott sentenced him to a five years and four months. Rachwal had been captured on Ring doorbell footage at the tower block in Dundee's Hilltown Court where the attack occurred. Mr O'Brien - who initially tackled the thug - was left with a nasty hand wound having been struck with one of the weapons. Lord Scott said Rachwal had been involved in an "unprovoked" attack.