The atmosphere is pretty creepy and cool, finding the weird book just made me wonder what that might have kicked off in the tomb! Maybe I missed something, but I couldn't figure out how to use the inventory when not using chests. So I ended up having leftover oil and didn't know how to use it... Being able to move a little faster would be appreciated too, as well as an option to adjust mouse sensitivity as mine was quite slow.
But all in all you made a neat little exploring experience that I'm sure could be improved by adding more stuff and/or mechanics. Nice starting point anyways :) And the lighting definitely added a lot to the creepy atmosphere and noticing how it slowly fades away can sure make you anxious!
P.S.: looks like we used the same tutorials for some of the environment in our games :D