Sons of Rome [an ill-advised puzzle for a new-ish game] [ENDED]

I think it should be fairly obvious which game it is.

No CV. Ends September 15, 08:30 p.m. GMT+4
This puzzle is meant to be solved individually, so, please, no posting or asking for answer here or anywhere else.
If there aren't many solvers by mid-week, I'll post some vague hints in this thread.

And now proceed here.

EDIT: Seems like I've overestimated the difficulty. There are plenty of solvers already, so no further hints will be given.

Answers:

1. Sulla
2. Cicero
3. Caligula
4. Marcus Crassus
5. Cato the Elder
6. Julius Caesar
7. Catullus
8. Pompey
9. Elagabalus
10. Ovid
11. Nero
12. Gaius Marius