.Fairly pretty for an old game, despite its age.
.Soundtrack is hectic and enjoyable, if a bit repetitive.
.Blowing up enemy craft is satisfying and fun enough to keep one playing.
.Giant tentacle monsters are cool.
.Most light-craft enemies are almost impossible to hit, kiting your shots endlessly and zooming around outside of your vision.
.Torpedoes are a joke, a bad joke. While 1-hit KO'ing most enemies, their targeting is terrible. One often has to resort to firing even high-end torpedoes at point-blank range; despite this, they will often veer off at the last moment. It is a small mercy that enemy rockets are almost as bad at hitting you.
.Auto-lose conditions. Aquanox has DOZENS of missions to the tune of 'protect the transport' or 'kill the target before time runs out'. Dealing with veritable ♥♥♥♥ storms of enemy craft over and over again because you couldn't blow them up fast enough to protect your mark is the pinnacle of frustration.
.Incomprehensible story. The story of Aquanox is vague, at best. Add to this the frankly atrocious voice acting and sound balance so bad one often can't hear characters over background music, and you'll find yourself skipping most dialogue.
Aquanox is one of the most frustrating games I have ever played. I saw it through to the end on the promise of giant sea monsters, though not without suffering puke-inducing rage brought on by endless escort missions. While it's great blowing up easier-to-hit craft, the sheer annoyance of most of the story campaign kills the fun factor.