[Eliza Shipwrecker]

I'm starting to level up my dagger, while waiting for the boss battle, and I'm wondering what the best use of skill points is. I haven't used them much, but I'm now at level 10 and don't know which skills actually work the way they say. I don't see that throwing dirt does anything.

What are some other players experience with this weapon. Which skills are worth it and which ones do you think are a total waste?

Thanks in advance for your insights.