Mario Roots is a hybrid RPG Platforming game that emulates swift action with RPG elements. Traverse the world to progress the plot, or get inside information from quests that helps advance your journey.
I've already shown this before, but here's a quick speed through of the level:Gloom Castle. This is after the new bug fixes/gravity changes. Challenge mode levels are one of the special features about Mario Roots. They are levels that are designed specifically to be challenging. It also ditches the RPG concept and relies purely on platforming and skills. You can gain star shards from beating Challenge levels. Star shards unlock a variety of skills/equips/items in story-mode.
Basically, Challenge levels are small quests in which you are rewarded star shards. They aren't forgiving. If any enemy hits you, you automatically die. However, the slide ability works differently. If the enemy is large, you are able to slide right through them. Of course, I made the level look extremely easy, but then again I made it and also play tested it a few dozen times.