A lot of good things done here, the level design, cutscenes, story, fighting and stealth mechanics - nice. Its quite hard to hit the guard in the right moment - I died twice together with the guard :) But I guess it is like that when you are not proficient with the sword ;) Great choice to have save-points.
Now, as mentioned before sfx would help a lot and some music probably too, but event this little atmosphere is good to have, so good choice to us it, even if it is basic, that helps. Also - for me the running seems unnecessary - or rather I should say - walking. Maybe we could have run as default and walk as shift modifier, that would be easier on my pinky ;)
And I feel a little metroidvania vibe, thats nice. Was waiting for more items other than sword (but surely, this is not necessarily the scope for a game jam)