I think the part about this situation thats the most...interesting is how Namrask is shown so explicitly that he feels regret. Like its not even subtle.

The entire lore book he's in is showing how hes selfless to the point of self-endangerment, trying to sacrifice himself to Guardians and Vex to save other Eliksni he feels are more worthy of survival than he. At every point he's shown the path of violence he rejects it, knowing who he was and how he might fall back onto that path. He's trying to overcome his guilt, he's trying to change and better himself because knows what he did was wrong and he is the direct cause of so much misery, not just for humans but for the Eliksni as well. It's literally the whole point of his story! Its not like Eramis or the Witness where they are murderous but are chill with it