Beret is a 2D puzzle-platformer game about a scientist, astonishingly named Beret, who has gained telekinetic abilities through his research at the Evil Corporation. He decides that the Evil Corporation is a tad too evil for his liking, and begins his solitary quest to overthrow the corporation and punish the evil deeds of his employers. Beret has 21 puzzle-filled levels, 120 collectable Medallions, over 20 hours of gameplay, and an unlockable level editor.
Hmm. This looks like an early draft of one of the puzzles in the Department of Detonation - there certainly aren't that many hoppers nor those long Beret-only passageways to blue medallion fragments in the published version.