I'm having trouble figuring out how someone can be 2/3 god and 1/3 human (the Chinese Remainder theorem seems to say it can't be worked out with pairings).Ah, well, myths and legends!
'ona li toki tawa jan mama Alulu e ni' the grammar puts prepositional phrases modifying the whole after the object 'e ni tawa mama Alulu' but I am not sure how firm that is (few counterexamples, all called into question, and some defended by trying to find a way to introduce prep phrases that modify just noun phrases -- not applicable here)
'o pali E jan wawa sin.'
'tan ni la jan pi ma tomo Uluku li ken lon pi ike ala".' Not sure what the end means. 'pi' has usually been restricted to noun phrases, although I think it makes perfect sense in verbal ones too. 'lon' is a preposition functioning as a verb here (if I am reading this right), so what follows it is the object of the preposition, not the direct object of the verb, so automatically grouped as a single item and not needing 'pi': "can be in a not bad place"? Of course, 'lon ike ala' can also mean "not be in a bad place' but the difference hardly seems to matter here (and if we go chasing after that ambiguity, the whole language gets a couple of orders of magnitude more complex). Or maybe you mean. "can exist not badly" which would use 'pi' (if allowed). All these call for a less awkward formulation -- for which I have no suggestions.
The dictionary uses 'kiwen telo' for "mud" but that (now) looks wrong to me and something using 'ko' looks better. Aesthetics!
"trap" 'ilo pi kama jo'? not very good, yet. But getting longer is also bad. Need a clever metaphor.