Try using games like Perfect Dark, or Goldeneye 007 as examples. You only got certain game modes / certain guns unlocked if you beat impossible time records. Old example, but dear god I bet you would never have heard complaints like this. I paid for the entire game experience, but I never got to play the Maian mission on PD because I couldn't beat everything on the hardest game mode. I didn't even cry about this as a 12 year old