Darts are a form of pk that is not understood by everybody. That causes some people to call darts "gay" and "noob", but the main reason is they don't know how they operate. I'll try to explain how they work so everybody knows about them.
Damage inflicted by darts is determined by *base* atk. What i mean by base atk is the points you actually allocate to atk. It ignores the atk from your weapon whatsoever. So, if you have a 2.2k weapon but have zero base atk, your darts will be basically useless.
Each point added to base atk will make your darts deal 1 more dmg. For example, if you take a deftsword (400 dmg) and have 500 base atk points, when you hit you'll deal 900 dmg to hp (if the target has 0 defense).
Defense is the stat that affects darting. If your darts make 1000 dmg, but the target has 800 defense, you'll only deal 200 dmg. If the target has more than 1000 defense, you will deal no dmg at all.