Terminator with aliens

This movie is essentially The Terminator but with an alien instead of a robot:
- similar cinematography
- villain is on a nonstop mission and will kill anyone who gets in the way to achieve their goal
- alien/robot nature hidden underneath skin
- villain is full robot/alien in climax of film
- villain is blown up in fiery explosion
- villain infiltrates night club
- villain is naked and steals clothes