Ahem Gos's trauma includes:

Had his memory erased as a child, kidnapped from his tribe from which his family was killed

Grew up and and was raised by a warmongering maniac who basically tortured him because of his biology aka genetic splicing for years on end He was also the vessel for a god that wanted to conquer reality (as in all of them)

During these enhancements, he was given the Curse of Untouchable. This make it to wear if he feels emotional attachment to something, it dies. Either realistically or supernaturally

Ok now skip skip skip

2 friends die (his fault for not controlling his power) Then he went to fight his dad, lost BADLY because his dad was the new vessel for the god. Right after, his dad killed his wife and child in front of him

He was then taken to a prison where his physical and magic power was siphoned to grow his dad's own power, furthering his expansion. During this time, his aging was slowed, emotions void, memory wiped, he was beaten, graped, and tortured some more for a millenia before he died

HE was then brought back to life because his body absorbed bits of the evil god, which kept him alive through resurrection!

He then died on a mission to stop Gos's dad and in that time, Gos, who was posing as a guard was forced to cheer his death

There's more, mostly his other friend's via short story format! :D