Trying To Find This Manhwa...

So... I've been reading this manhwa a few months ago, but because of college, I have now forgotten what its name is. I still remember some things about it so, I desperately require any assistance in finding it.

Here are some things that I remember:
* The manhwa is Fantasy/Action
* The MC is OP, and one of his abilities is to slow down enemies (I think?)
* The MC, while OP, has PTSD, as he saw many people that he calls his comrades died when they entered a dungeon.
* The MC shoulders many wishes of his fallen comrades, and he vows to fulfill their wishes. They range from taking a jog to knitting and baking. Once he fulfills every wishes, he wants to unalive himself.
* The tonal whiplash between most scenes where the comrades of the MC are dying and then them giving their last wishes to the MC is quite comedic (for me atleast).
* The MC have a male childhood friend who died as well at the dungeon.

That's all I can hardly remember. If anyone knows what it is, please tell me!