The gameplay combines elements from 2D platformers with puzzle and action touches. Sometimes you have to jump from platform to platform, dodging obstacles, while other times you'll use a sword to kill the bad guys. And every now and then you'll have to solve puzzles.
Graphically, Darkened Light has a very simple aesthetic. Both the characters and the levels are recreated pixel by pixel, in a style similar at certain moments to manga or anime. The style doesn't have many bells and whistles and isn't especially gorgeous, but it's nicely done and consistent.
Darkened Light is a fun action platformer that, on top of having a quite attractive gameplay, also has a good storyline. Not the very best game of its kind, but a good representative of the genre.