1 get chitin armor.

2 get a pump action shotgun.

3 find a brontosaurus .

4 start shooting its legs it will run away after being under 1000 heath.

5 continue shooting till dead, then steal egg and hit it to get its meat.

6 bonus, if you just want the egg or just want to kill it steal the egg or shoot it, then run to your raft, then sail away as it will chase you, then wait on till the sharks go after it.