Three account perks

Ranged Tempo
Halves standard ranged attack delay against NPCs, rounded up with a 2-tick minimum. PvP and special attacks are excluded.

Marksman Focus
Increases ranged damage dealt to NPCs by 5%.

Guardian Resolve
Reduces all damage received from NPCs by 5%.
Ranged Tempo affects standard ranged attacks; Marksman Focus adds 5% ranged damage against NPCs. Guardian Resolve helps while you learn an encounter.
Equipment upgrades to consider
Obsidian Life Spark
A successful weapon hit has a 20% chance to restore 1 Hitpoint.
Obsidian Spirit Siphon
A successful weapon hit has a 10% chance to restore 1 Prayer point.
Obsidian Aegis
Each non-zero NPC hit has a 1-in-12 chance to deal 25% less damage.
Use your existing bow, crossbow or other ranged weapon with the correct ammunition. Life Spark and Spirit Siphon fit a weapon; Aegis fits a body or shield. Weapon charges and ammunition still matter.
A useful swap
For farming, replace Guardian Resolve with Loot Attunement. Its normal rare-drop bonus applies only to supported tables, not every unique in the game.

Before you spend
Check perk compatibility, compare permanent upgrades and review Forge materials. Socketed effects require worn matching gear; they cannot bypass the one-Tempo or one-Focus rules.