Before becoming a Rank Three Core Evolver, Evan had no way of returning from Azragoth World without completing the three tasks he had received.
However, after reaching Rank Three and mastering Void Energy, his situation changed.
While moving towards the Eldranthia Empire with Mor'Zarak, he visited the place where he had first appeared in Azragoth World and fought against Xael'Tor.
While there, he tried to find a way back without completing the three tasks... and surprisingly, he found faint traces of the void rift from which he had been sent to Azragoth World.
Normally, it would have been impossible for him to trace his way back using just the faint remnants of the void rift. Even for a Rank Five Core Evolver with mastery over Void Energy, it would have been extremely difficult to retrace the path.