This is a super creative little idea! The setting has a lot of personality; besides the missing sound, I'd say my two big issues are the fact that even though the camera is isometric, the controls aren't, which I found disorienting-- And while the oilies making you more slippery is a great idea, I thought that the escalation felt too... "sudden"? I barely noticed what was going on since getting darker was so subtle and the additions to my slipperiness felt minute until suddenly I was SUPER dark and slippery and it was impossible to survive. I think it would be a little more exciting if you started a little slippery by default and had each hit have a more noticeable, gradual change to your movement (and in exchange there could be items that spawn randomly that can clean you up a little or something). Looking forward to seeing more of this!