Ritnaran Lekras (Heroist)

So, instead of: "Let's go," said the mage, it would be better to write: "The mage went"? Or am I misunderstanding?

Exactly. If any unforeseen difficulties arise with the intention to go, I will stop.
Well, the goblin's hearing wasn't elven, but he still heard the sound of a stream in the distance. The overall silence of the place helped him with this.