First there was the as mentioned Payday 2 example where Overkill has
tied weapon unlocks to specific achievements.
Not exact matches
There isn't a story that
ties it all together, so basically, you play in the RE5 world, killing the infected for better times, and then using good scores to
unlock weapons, characters and more missions.
To the seasoned competitive player, the signs of a smurf are much more obvious than a hacker: you look for a CS: GO profile with very few achievements
unlocked or custom
weapon skins equipped,
tied to a Steam account with CS: GO as its only owned game («Wow, such dedication.