Help For A Sentence

[Volcano1985]

I shall make my escape thereat and go to repay thy unselfish service to me.

What does it mean?

[svartnik]

I shall make my escape thereat and go to repay thy unselfish service to me.

What does it mean?

I will get away at that place or at that time, and go to repay your unselfish sevice to me.

thy = your (archaic)

Can I ask you back, Vulcano?

"Help for a sentence?"
Do you mean you need help with this sentence? Is it a kind of non-standard English dialect that you are using again and again?