Maybe it's this one - Skunny: Back to the Forest (click the screenshots)
He's not a fox though (I don't think) but looks close.

Hey, guys. Decided to take another look on this game today and found It. Finally.

https://dosgames.com/game/darkest-night-the/

I was stuck with the name "darkp1" in my head for all this time, turns out its the archive name of one of the creator's games, dismal passages. Well, the rest is history.

Case solved.

Ouch.

Once I checked this author's games. All of them are quite dull and alike to each other for me. I hope, you will have more fun with them than I.