I have trouble finishing arcs. Two arcs, 177 chapters, 325k words. There is always something interesting I want to add, or a plotline to tie up, and then that leads to more stuff. Chapter after chapter rolls by.

I was drawing a blank on how to write the fight for the last chapter and then settled on high explosives. That's always a good starting point and the story progressed from there to 3k words of the story tonight. 

A little clean-up, maybe only a few, probably a dozen chapters, and then we send Milo deeper into the unexplored tunnels of the deepdown.

Congratulations! This is an awesome milestone, I hope you had a blast writing this magnificent setting! Keep up the good work and always be happy and healthy!

I'm pretty sure your arcs are just books lol. Congrats nonetheless. 

Congrats. Finishing an arc isn't easy. There's always more stuff that comes to mind. Well done.