The Rig (2010)

How bad is it? It's derivative and terrible.
Should you see it? No.

This is all you see of the monster in the film.

People on an oil rig get attacked by a monster. End of story. It's dull and predictable, with unneeded flashbacks and a storm that has continuity problems. The characters are undeveloped, there's no tension, but it looks like it had a decent budget.