One of the characters gets the length of her shift incorrect. The opening narration text states "Day 87 of 90 Day Shift". However, at about 11 minutes, Bow says, "It would be just my luck to finish two months' worth of work two miles under, and have the whole place fall apart with just three days left."
When Willie falls off the ridge, you see her walking among some large tube worms. Immediately before she says "My God", the worm to her left clearly shows a vertical seam where the left/right pieces of the worm were glued together.
The goof item below may give away important plot points.
In the final escape sequence, the remaining crewmembers use inflated flotation devices to pull their pressure suits to the surface, but once they eject from the suits and surface, the flotation devices are nowhere to be seen.