Separation Anxiety is basically a clone of Maximum Carnage without the story elements between levels to give context. It doesn't play too bad, but it's incredibly generic beat'em up especially for someone who cut his teeth on the genre with Final Fight, TMNT Arcade, and the X-Men arcade game which often had specials and interactive elements in the levels to add variety. The only neat trick in SA is summoning allies and MC had that to begin with.