My favorite aspect of this shooter is its atypical soundtrack, not only for the excellence of the compositions themselves but also for the distinct audio quality. It's not the same sort of stuff you can hear from the lauded Dungeon Explorer and The Legendary Axe II soundtracks--in fact, it's very bizarre and very different from any other HuCard-presented material I can think of--but it's immensely impressive and extremely compelling. Consider this effort a good reference point for misguided fools who believe the TG-16's aural capabilities don't extend beyond NES-caliber sound.
Aside from its intense, atmospheric score, Psychosis is best known for its intriguing "delve inside a troubled mind" theme, and it really takes advantage of the concept with an awesome ship design, outlandish enemies, and a generally abstract feeling about the realm it takes place in.
The fox boss shouldn't present much of a challenge, but the guy with the large knives will be a totally different story until you figure out his pattern.