1st off let me make my case before you slag me off.
A great many games are very easy these days but at the very least you feel like a proper billy badass dominating until it gets a bit dull. I often felt games should be rather challenging but allow you to unlock cheats once you complete their highest difficulty setting(to preserve the developers vision for the game)
So like you’d beat halo on legenday then get inf ammo and super melee skulls
Another example is ninja gaiden on the xbox. I completed it on normal and felt like I’d accomplished something which is great but there was so much challenge and so little fun I never played that game again. A nice god mode or super sword coulda made it fun.
To make the cheats work you gotta unlock them and once cheats are on you cant get achievements, also no cheats in mulitplayer. There’s probably a better use for the memory I suppose but it would defo be fun.