Complex sentence: In the group stage, CLG.EU placed first, defeating Moscow Five, Absolute Legends, and Mebdi's Minions, and then defeated FnaticRC to advance to the Grand Final.
Split into simpler sentences: In the group stage, CLG.EU would placed first, defeating Moscow Five, Absolute Legends, and Mebdi's Minions. The team defeated FnaticRC to advance to the Grand Final.