Rosenkreuzstilette (ローゼンクロイツスティレッテ) is a platform game published by independent Japanese studio [erka:es]. Gameplay resembles a Mega Man clone, with Spiritia collecting various weapons from each boss defeated, and alternate protagonist Grolla playing more like Zero from the Mega Man X and Mega Man Zero series.
See how many things from different Mega Man games you can spot while watching this! Stage by stage notes are in the author's comments.
This movie uses Grolla. For more action, we also have a Spiritia movie by the same author.