Endeavor is a Metroidvania with multiple endings and a story about a dwarf who is asked by his dead father to try to gain the strength and wisdom to obtain a treasure that has been handed down their family for generations. After learning the basics while exploring your home land the story takes a sudden turn (or literally a fall). It is up to you to choose what to do from there.
Zillix started making the game for the October challenge at Ludum Dare and as a sequel to his mini-LD entry, Summit. Earlier this month he got Endeavor sponsored by Newgrounds, and he also has it up at Kongregate (where it is doing quiet well in the monthly ranking contest for new games).
I like the slightly obscured look of the tiny pixel art and the variety and quality of the music. It took me an hour or two to finish the game the first time, but the length was significantly shorter when I started over to get the other endings. I also enjoyed the non-linear, power up encapsulated exploration so much I highly recommend Endeavor.
TIGdb: Entry for Endeavor