Skill
I think its a skill issue, you can easily kill any leviathan with no3
At least im pretty sure thats what they said about guns for his games
Because of a school shootinf the creator of subnautica said no more guns in his games so that wont be added
Bulbo trees. 20 food and 8 water if im not mistaken. Just put a few of them in your cyclops and youre ready