It's up to you of course, but a character with no personality sounds like it would be very difficult to play. We're not going to be fighting 100% of the time, after all. Sometimes our characters just chat, have meals together, play games, talk about their pasts or their opinions, and make stuff.

'Specialty: everything' is something of an oxymoron, though I assume you mean something like a jack-of-all-trades warrior?

If this revival power only works if he's killed by enemies from his own game, in addition to only working once a month, it's such a specific power that it might as well be useless. There are enemies from countless different games available; I might not ever use Dungreed ones at all. 

I would appreciate elaboration on 'All Weapons of all eras that function like weapons from the dungeon'. Maybe you could list said weapon types so that when I need to reference the sheet the relevant information is all there, and I don't have to trawl each time?

Guest List characters don't appear right off the bat. It just means they'll appear somewhere in the world at some point.

Probably the biggest problem is "Does not work with others unless he has to". Being a part of a team is basically this whole RP. If your character doesn't want to stay with the team, not only does that remove the social aspect of RPing, but it also demands that I go to the extra effort of doing different stuff for your character only. Which is a tough sell, if I'm being honest. Do you think that Adventurer would stick with a team despite not wanting to?