Just a heads-up on a problem with the otyugh, that the O5e version also had when first published: once it manages to stun you with a tentacle slam, it's over unless someone else can break you free. Stunned, at least in O5e, means you automatically fail Strength saves, and since you're stunned until the end of the Otyugh's next turn, you will automatically fail, and then be stunned again. The fix in O5e was to make the save Constitution-based instead.
Now, I don't know if Stunned works the same in Level Up which might make this a non-issue, but I just wanted to raise a warning flag.