Outland
Got the Launchpad skill now. I love this game so far!
Oldschool, but very polished. It has a light Super Metroidish exploration aspect but the world isn't as open as in Super Metroid. You have one hub world from which you can enter the other worlds, if you have the necessary abilities to get to the entrances. In these worlds you are then guided by a light/shadow-swarm-thing that occasionally appears where you need to go so it's more or less a linear affair, but you are encouraged to stray from this linear path and explore the worlds for secrets and doubloons.
What's surprising is how every jump you think is possible IS possible.
No guesswork involved at all. That alone places it above certain other jump'n'runs.
The big thing here is that most of the enemies and obstacles you encounter are either blue or red and you can switch your character to be either blue or red instantly at the press of a button. Enemies can always hit you but you can only harm them if you're the opposing color. Energy (there are many turrets that fire patterns of energy bullets and some enemies have ranged attacks that consist of energy beams and bullets too) can only harm you if it's the other color.
There are even moving platforms that only move when you're the same color as they are while you're standing on them and other platforms or walls only become opaque and thus interactable when you switch to their color.
It's a pretty cool mechanic and it seems like they really made something out of it. It's not just a tacked on gimmick but it's an integral part of the game and it makes for pretty fun scenarios.
Oh yeah, and there are bosses and they are of the oldschool puzzle-action type. Meaning you have to figure out how they work and then there is still action involved in actually beating them. In short, the best kind of bosses.

And the ones I've seen so far have been incredible.
Imho the game doesn't have to hide from the classics. It's not a second Super Metroid, but what is, really... but it's certainly up there with the likes of Abe's Oddyssey.