Step 1 Open your launcher of game. Step 2 Press forum button in right side of launcher. Step 3 When you pressed it you will see forum of Warface. Press three lines in left top corner. Step 4 When you pressed it choose Warface from this table. Step 5 When you pressed Warface icon from that table you will see your nickname where in begin is u_ from the right side you should see button with CHANGE NICKNAME.