Saving My Favorite Minor Character

I made my favorite character the unfortunate extra who must always die in a popular game. As someone who obsessed over saving this extra for longer than anyone else, I found myself transported into the game world. This means I can now experiment with all the ideas I couldn’t try due to the limitations of the game’s system, right? In that case, I’ll use the most extraordinary plans and every possible variable to ensure my favorite character survives. Wait a minute. Why is my favorite character becoming infinitely stronger, breaking the balance of the game?