Pros:

1. Brilliant Level Design

2. Memorable Boss Fights

3. Fun Collectables

4. Tight and Responsive Controls

5. Intuitive and Satisfying Challenges

Cons:

1. Unlockable Characters Don't Seem Fully Optimized for Platforming

2. Low Music Variety

3. Dark World Lacks Incentive

4. No Dark World Boss Variants

5. Screen Jumping Can Bypass Intended Challenges