It's a short metroidvania fps with an old-school flavor. The levels and enemy designs are the best part, they remind me of the last Xen levels of HL1. However, the combat gets soon kind of repetitive, and the "story", delivered through somewhat stale and predictable collectable notes, feels more like an excuse to allow completionist playthroughs. For a 1 dev, 1 hour long game, I'd say it's cool.