What hunting artifacts do I get first?

Qistrel

So, for hunting, what artis should I get, and which is more important? Should I buy all the first level ones, or go all in on upgrading one?

Blunt Enhancement (boosts chain damage) (75/150/300 credits)
Rune of Fitness (bonus health) (125/250/500 credits)
Rune of Health Regeneration (125/250/500 credits)
Divinus Whip (275 credits)

Or maybe?
Critical Hit Rune (200 credits)

Lerad

Health or Critical.

Though arguably, the former is less important with vitals being normalized, and generally everyone seeing a rise in their health pool anyway. It may well be that a RoA is better than a health rune at this point.

Criticals will always be useful. There's a reason why the level 4 goes for a premium.