Took a break to concentrate on Spider-Man which I wrapped up last night, so I went back to this and managed to get through 3-1. The Idol boss was quite fun. Slow paced, so you can take your time, but still tricky as you have to remember where all the traps were placed.
Still, it wasn't too bad and I beat it on my first try.
Decided to get all the initial stage for each section cleared, so I've gone back and started 2-1 which is a total change of pace from the grim as strawberry float Prison I was in.
Loving this so far.