I believe I've found a weird bug, I'm not leveling up anymore; I reached level 11 sometime before reaching the capital, and for some reason I'm at the same level after genociding everything in my way, including two bosses. And since there is no way to see your current xp / next level requisite, I can't see if I'm not getting xp or is some other thing. Any idea?
Same. I don't know when it happened for me, but mine got locked at 14, which was around the harpy boss. I guess that only thing to do is have multiple saves ready in case one gets compromised.
The battles aren't difficult even at these levels, per se. But losing the ability to level up locks you out from the skills needed for drill sergeant's side-quest line, which gives one of the accessories needed for the "collect all 5" side quest from that guy in the jewelry shop (I say "side quest," but he basically gives "Da Sabra" to you if you have the 5 certain accessories in your inventory) . Since I'm basically in the final chapter of this game, I'm not want to replay multiple hours of gameplay. I'm latest save is at 18 hours when I realized the exp bug was an actual hindrance for quest-related stuff.
You can use programs like MTool to both update the exp via the "DataEdit" tap and access the game's default status screen as a work around. Personally, I'd recommend leveling up one at a time as I'm unsure if the engine will update the character's skills if you skip levels.
EDIT: FYI, lvl 25 is when she learns her last skill by level