On their right the Mutants ran forward to tackle the Necron left, supported by the two Traitor Sentinels.
The mutants doubled forward ready to attack the unit of Necron warriors holding their left, but these were supported by a large Necron Stalker.. ooo darn, this may not end well. The Stalker assaulted the Mutants and the few remaining mutants broke and fled.
The Traitors on the left doubled forward to attack the Necron right, but those warriors were spoiling for a fight and after a round of Gaus Rifle fire they advanced to take the fight to the Traitors.
They quickly despatched that unit, but were then hit in the flank by the Traitors that had advanced in the centre.
The Chaos Space Marines assaulted the Wraiths that had emerged from cover to protect the central unit of warriors.
The Mutants disappeared in a wave of blood and gore, allowing the Necron left to advance. A battle developed between the Stalker and the Sentinels.