Haha, the jump SFX was originally named something like "hit01", so you are right on the money hahaha
Generated a quick sound with jsfxr, and called it a day, for the sake of progress.
Audio settings were planned, but the game was rushed and not developed enough truthfully.
And the lil' creatures? (The Captains!) The ones that are not on a wheelchair were meant to jump up and down as they spoke.
Other than that, I agree, it's super difficult to notice, and the dialogue doesn't make it clear enough.
I'll have this mentally noted for whatever's next :p
Thanks much for the compliments and feedback!! :D