The PlayStation version of the game has a few notable differences to its Nintendo 64 counterpart: it runs off a version of the Medal of Honor engine, and has 11 missions in contrast to the N64's 14; some of which are not shared between the two. The missions that are similar (usually those taken from the film) further tend to play out differently, and utilize completely different gadgets and weaponry.
It also does not feature additional objectives at higher difficulty modes, and only cheats are unlocked by beating specific missions at a specific difficulty. However, it does feature CD-quality music and voices, as well as video clips from the movie for cutscenes. It is single-player only, and features no multiplayer component.