I'm not sure where the name "Monumental Mode" comes from, if anyone has a source on that particular name, it would be appreciated.
The text dump does confirm a 'hardcore mode', whereupon "True Death" occurs when the player dies in soul form. So I assumed it was called True Death instead, but of course that could be what occurs in
Monumental Mode. I just don't see that name anywhere, so I'll continue calling it "True Death Mode" for now instead...
Anyways, here's exactly what the text dump says:
-When your HP reaches 0 in ghost form, True Death occurs.
-A player with a True Death has all of their gained experience reset.
-True Death occurs when you die in ghost mode. A True Death resets your items and status to their starting levels.
-To prevent this, rewrite a soul sign and begin multiplay or access the blood mark found at the place where you died.
-When your HP reaches 0, you will die. Be sure to keep distance between the enemy and yourself.
-When you die, you are warped to a stone monolith.
One thing that sounds appealing about this mode is that it wouldn't have deleted your character/ save file. Instead, it would just reload back at a starting point (a monolith placed somewhere in the nexus maybe?), with everything reset. It sounds like it'd allow you to start over again quickly, not having to go through character creation over and over. That'd be a nice way of implementing it.