What about weapon attachments or the player tags? It's sad I actually want to "cheat" just to get upgrades I'm supposed to have due to how broken the game is. Getting attachments are based on how many kills you do with the weapon, so possibly modifying that may be easier to find.
Edit: I've been lazy didn't bother looking at files myself. I probably found it, but again the game may not trigger them due to it being buggy. I'll report back otherwise.