Many RPGs either let your character go at full strength up until they die, or put you in a death spiral where every injury makes it harder and harder for you to continue fighting. But those don't need to be the only ways of resolving combat injuries. There is at least one game out there where getting hurt makes you more dangerous...
Chuubo's wounds
Chuubo's Marvelous Wish-Granting Engine is a very narrative-focused RPG of people empowered by the wishing power of their hearts. You can pretty much play anything in that world, from a normal kid, through a demigod, to an adventurous rat.
The game has many bits to it, but your character's health is represented by a set of Normal, Tough and Divine Health Levels. Each accepts more and more serious Wounds, from simple strains and bruises, through getting shot and stabbed, up to being vaporised in nuclear fire (and surviving it to tell the tale without using a fridge...).
Normally a TTRPG would use those as an opportunity to make sure your character is weakened by being hurt like that and giving you penalties to going forward. But not Chuubo's. Again, it's a narrative game, it cares about you playing someone who is hurt and making that matter to the story. And since this is a fairly player-driven game, it wants the players to be bringing up being hurt into the narrative they are telling. So it does the exact opposite of punishing you - it rewards you for having wounds.So the Wounds turn into something useful, a Tool bonus (adding to your pools), a new Skill (letting you do new things) or even something more magical - Bonds and Afflictions (more on those later). What you get is mostly yours to decide, but it should make sense in the context of how you got hurt. So you could, say, get a sprained ankle from pushing yourself too hard in a race and that means you'll be limping for a bit, but it also makes you pathetic in an adorable way which means you get +1 Tool Bonus to asking people for help. Or maybe you were fighting some kind of demon and its poison seeped into you in a way that will slowly kill you but not before giving you demon strength to catch an arrow mid air with your Superior Strength:
To the max - Bonds and Afflictions
But if you want to really go all out, you can really lean on the power of Bonds and Afflictions. In Chuubo's terms, those are absolute statements about what is true about you. Universal Constants you express with "I must", "I can't" or "I'm driven to". This can of course go pretty far - if you're being shot at by a hail of bullets and one hits close to your Wishing Heart, you may declare that now "I can't be hurt by bullets" and that would become True - no other bullet would be able to hurt you until that Wound would get healed. If that's the kind of gonzo anime game you're playing, have fun! Become immune to bullets like you would build up an immunity to an infection!
These kind of powers aren't out of whack in the power level of the system though - a starting character already has access to Bonds and Afflictions and can develop more over the course of regular play. And even those powers aren't untouchable - the system has ways of turning them off with the correct application of powerful enough magic (like, say, someone having a different Bond or Affliction that comes in conflict with yours).
Conclusions
It's still interesting to see a system that gives players wound bonuses instead of penalties, potentially turning a downward death spiral into an upward death spiral (until you run out of your health levels and pop at the height of your power). The only other system I've seen do something similar was Exalted, where some specific character splats would work well by stacking wound dice penalties and flipping them into wound dice bonuses, but that is a little less exciting than exhausting yourself so hard during a race you break through the barrier of reality and see the true world...
