These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Complete Monster: Montross. His first introduction shows him coldly gunning down a helpless bounty who's wanted dead or alive, simply for the pleasure of murder. As the man desperately pleads, his bounty is worth more alive. Montross replies "You're worth enough dead." Later on, while trying to beat Fett to the big prize that they're both after, he tortures Fett's non-combatant friend and mother-figure to find out the location, mortally wounding her in the process. Then he sets her entire space station to explode, hoping to kill Fett. He fails, but undoubtedly slaughters countless civilians who were on the station. Fortunately, he gets a karmic death when Jango leaves him to be ripped apart by the Banda Gora.
Demonic Spiders: The nexu on Malastare. They're highly resilient, strong, masters of the Deadly Lunge and they're completely silent. The only efficient way to slay them is to use the poison darts, otherwise they soak up a lot of blaster fire. Also, any enemy with an explosive weapon, or the Tusken Raiders' massiffs on Tatooine.
Game Breaker: Melee enemies can be slaughtered en masse with the flamethrower; the last few levels can be easily passed with the flamethrower.
Goddamn Bats: Many enemies, especially snipers and artillery men.
Moment Of Awesome: Jango manages to defeat Komari Vosa alone using only his pistols against her lightsabers.
Nightmare Fuel: The Bando Gora followers are quite scary. Must be their glowing red eyes or the fact that they barely look human at all.
Player Punch: Roz gets tortured and killed by Montross. Keeping this in mind, his ghastly demise is far more enjoyable.
Tear Jerker: Roz's posthumous message shows how much she really cared about Jango. Considering it comes from a Toydarian, a race known for greed and selfishness, this is quite surprising. Her final words are also implied to be what motivated Jango to have Boba created.