New stats info:
In the weekly stats, there are three new columns: assists, classes and number of sets played. A player will get an assist if they injure an enemy player for 20+ HP of damage. A player on full health has around 60 HP in total, sometimes a few more or less depending on the troop type and faction, so you need to take approximately 1/3 of your opponent's health. Consecutive hits on the same player add up, and, finally, the player needs to die in order for the assist to count (not by the person who scored an assist, otherwise it will just count as a kill instead).