I liked the sequel, it was just bloated, along with missing some scenic connective tissue.The Chronicles of Riddick should be renamed "The Ridiculous Chronicles".
I know I'm supposed to suspend my disbelief a bit during movies, but the scenes where the sun rising causes the planet to basically catch fire where it touches completely ignored any known laws of physics. The way someon can be totally fine in a bit of shade, but literally burn to ash in seconds out in the sunlight, pushed my bullshit-o-meter to breaking point.
There is a third movie just called Riddick by the way, if you liked both of the others then it's definitely worth a watch. I rate it as better than the second, but not as good as the original.
I'll give the third a go on your rec.
My only hope for the story is that they don't try to humanize him.
You can only fuck up the story of a badass anti hero by trying to force emotional stakes.