This is a typical run 'n' gun game through side-scrolling stages. However, Judge Dredd is a bit more different than a typical game of that type. Every set of stages has a set of objectives, usually an obligatory one and an optional one. For instance, in the first set of stages, you need to quell a series of riots by destroying shipments of weapons. The secondary objective almost always involves arresting or killing all the enemies in the stage. This can be more complicated than it sounds, as each criminal has a different method in which you need to get them to surrender. This can involve using a particular type of ammo, using physical attacks instead of guns, or causing a specific amount of damage without killing. You're given a short duration of time to do the arrest before they go back to fighting.
The graphics look pretty cool here. Each level is nicely designed with detailed backgrounds echoing an era barren futuristic wasteland somewhere in the future whilst sprites move fast and scrolling is quite smooth. Sprites can move in all 8 directions too. It's a bit tricky though to climb ropes in that, you must stay upon certain point near them in order to ascent or descend.
Sound is good too, having several SFX such as gunfire, explotions etc, accompanied with some cool (but rather short and repetitive) tunes.