Are you playing through Skylanders Swap Force and wish it was just THAT much more challenging? Is the game too much of a breeze for you? Do you love Skylanders but also want something you can slowly trudge through? For these reasons, the game has a secret Nightmare Difficulty for you and your hardcore tendencies.
To unlock nightmare difficulty: Beat the game
That’s it. If you compete the game once, you’ll have nightmare difficulty to challenge yourself with. So if you’re the guy’/gal in the scenario above, nothing says you can’t rush through the game and then play your own hardcore version after. Best of luck!