Great game!  I loved the highly original, simple yet nuanced mechanics and the combination of tactics and skill required to beat the levels.  The visual design made good use of simple elements to create a clean, consistent aesthetic.  I liked how the color progression was echoed across elements to tie the visuals together.  The zany story and "bouncy" text also contributed to the enjoyment and gave it a fun retro feel.

A couple of critiques/suggestions.

* I would have liked a visual indicator for teleporter activation, such as a "charging" animation to telegraph when teleportation would occur.

* The delay after dying, completing a level, etc. felt too sluggish.  This was particularly noticeable on more difficult levels where the long reset delay added to the frustration of each unsuccessful attempt.

* The "tips" after failing a level sometimes felt a bit obvious and patronizing, especially after repeated failures.  Maybe you could have an option to turn them off or only show them on the first failure.

* The boss battle felt a little lackluster.  In terms of gameplay, the scrolling mechanic just felt less fun than the regular levels.  It seemed like there wasn't as much strategy and it was just all about memorizing the layout and keeping ahead of the wall of death.  Visually, I think the level would benefit from some extra visual embellishment to set it apart from the regular levels.  The villain also lacked visual interest and characterization, which felt like a missed opportunity.