The vampire theme + shooter/slasher combat is a killer combo. Art and music are top-notch - they really sell the revenge story. I also like the first location, but the others need to be changed - they're too big in scale compared to the player and don't convey much. I'd also like to see more gameplay in the first location, as I found a lot of interesting things while running around the level, but the gameplay doesn't really involve running there. Sure, the lack of content makes the gameplay feel a bit thin right now, but that's expected for a jam, and the core dynamics are already fun. I'd just love to get my hands on the abilities faster! You've set your sights really high with this project, and i really hope you keep developing it - it deserves to become a full game!