Summoning a demon god was not easy - Eric would give it that.
It almost costed him more than his life. His sanity and humanity were also on the line. While calling forth such a powerful entity was already dangerous and difficult - even more than anyone could ever imagine, controlling it was a lot worse.
Eric sacrificed many things for this gamble - much more than the other party, of course. However, the reason why he won in the end was that he never allowed himself to be the one that would get sacrificed at any point.
The whole experience was indeed dauntingly hellish. And indisputably, the pain he had to go through during the ritual was almost unbearable. But even then, he did not turn back nor waver.
Eric was dead set on seeing through it until the end.
"Finally... I was able to do it... I did it..." he breathed out in between pants and grunts, having only finished the summoning rites.
"I did it."
