RuneScape Classic have a very interesting combat system.
A fight last 3 rounds minimum. After 3 rounds passed, a player may exit the combat to either use consumables (Potions, food to bring back hit points up to avoid dying or simply to shoot from a distance by either using ranged or magic) or you can simply stay in the fight if you do not need to eat food.
If fighting a player, you must be sure you are well prepared as an opponent will mostly have food in his inventory. So making sure you eat food after every 3 rounds is a nice tactic (Against players).
While training combat, you can select a stance either Accurate, Aggressive, Defensive and Controlled.
Each stance give experience in different skills:
Controlled: Experience is given for every melee combat attribute (Attack, Strength, Defense at 1/3rd of the total XP gained from killing a monster).
Accurate: Experience in Attack.
Aggressive: Experience in Strength.
Defensive: Experience in Defense.
Damage to enemy:
Damage to player:
When your hitpoints reach 0, you are dead. To make sure this does not happen, eat food when you feel that you are at risk.
Food can be purchased in a few stores accross the realm or can be gathered from fishing combined with cooking or simply with the cooking skill.