its a bit rough but thats to be expected of a game in alpha. i LOVE the artwork, and i love that different hazards have unique defeat animations. there is definitely an attention to detail here thats not common at this stage in development.
i will say though, the platforming would be pretty easy if the FOV was wider. at the moment its pretty hard to see two feet in front of you (or below you for that matter.) .and its pretty easy to slide off of ledges when diving. maybe add some sort of ledge stop when sliding?