It was one of the first games I'd ever played on the ps1 but I cant remember the name of it.
No clear story line, it was a mix of mainly 2D lvls and crappy 3D chase scenes, the boss was basically a chase scene ending with you saving some girl.
The 2D parts where the fun parts, you got a gravity like gun where you could pick up your robotic enemies and slam them into the ground when you turn and you could also jam them into machinery to advance though the lvls.
Sound familiar to anyone?