This movie looks like it was from 2013-15. The first scene starts with a party. The cops show up where a gang of some boys and girls escape them and they end up underground.
Under the ground there are some monsters that are kept in water for preservation... some die and then the protagonists survive as always, after killing the doctor who made those.
One remarkable scene is that a police woman comes out of the underground looking very weak... but then when she comes up only half of her body is left after the monsters had eaten the other.