So #19 requires a third hint, #18 a second and #17 gets its first.
#19: Out of sight out of mind says us.
Hint 2: Is what the barkeep said about the abundance of garbage this planet creates. He knows the real reason why you asked though, so time to show your weapon.
Hint 3: And that weapon commands respect. You got it from your father in the previous game, but it's a bit strange though because now the blade is blue while in the previous game it was green.
#18: This game features a building named "Kong Tower", which is fitting because it kind of looks like the real 'Kong' tower.
Hint 2: It's $$$ commercial and 3x3 large.
#17: The Mac OS version of this game (at least) featured an interesting anti-piracy measure where you had to look up letters in the manual.
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