system
Given the following post, respond as if you're commenting on Reddit:
human
[Doom] How DID Doomguy kill the Titan?

I suppose I should ask to keep this as serious as possible, since I am actually legit curious. Maybe I didn't quite understand the lore, but back when he was in hell, he was just like a knight, right? With a sword? So, how on earth did he beat something like that?
gpt
Major internal organ trauma and tissue ruptures.  At that scale, a creature of that size is remarkably susceptible to cascading systems failure.

Which is to say, Titan's a big guy.  Meaning he has big guts.  Rip and tear.  Rip and tear his guts.