the UI was bugged in fullscreen so it took me some time to realize what's the goal in this game, after i exited fullscreen it made perfect sense as i saw the timer going up whenever i drill the flashing squares
pretty simple gameplay you have to do some quick thinking while making your way down to avoid wasting time however its a bit too easy right which makes sense, it would be impossible to balance all these floors in such a short time
imo the controls were pretty easy but it would probably make sense to drill in the direction you're facing (unless you wanted to add more features to the game that involve drilling in a different direction)