I really liked this! The interactivity of maintaining the drill was really satisfying and added a lot of urgency to the game.
A couple of times I tried to do preventative maintenance, such as when the battery died I would try to refill the fluid levels, but noticed that they were only "Full" or "Empty".
This was a clever design choice to prevent me from working ahead and defeating the game's primary urgency mechanic, so well done there haha.
Overall I really enjoyed this. Very atmospheric and the chunky feel of the drill made it satisfying to interact with.
(Spoilers!)
Also, the creature at the end was friend-shaped.