moving in water you go slower, which makes sense but is sorta sad. when you go back to do a different level, you dont get the weapons you had previously unlocked.
its very good, quite interesting, but a few glitches and not much replay value. multiplayer also kinda sucked. but it was pretty fun. the game is really easy, but had to do just trying each level once. it could be much longer, but the levels themselves are pretty big. the soundtrack is pretty good, especially for its time. overall, it was fun, so buy it if its cheap. or rent. thats good too, probably better, with the low replay value and all.