Items can be Normal (grey), Magic (blue), Rare (yellow) or Unique (brown). Item Classes which do not have these rarities, such as Currency, have individual rarity for each item. Magic items can have 2 Modifiers; a Prefix and a Suffix. Rare items can have up to 6 Modifiers; 3 Prefixes and 3 Suffixes. More powerful and dangerous enemies are more likely to drop rarer Items.

Critical Hits deal +100% extra damage (i.e. twice as much damage) by default. Critical Damage Bonuses can further modify this value. Attacks usually use your weapon's base Critical Hit Chance, while Spells and some other skills have their base Critical Hit Chance listed on the skill. Most modifiers to Critical Hit Chance are percentage based. For example, gaining 100% increased Critical Hit Chance on a base Critical Hit Chance of 7% would result in a final Critical Hit Chance of 14%.

Spells are skills that use raw magic to destroy your enemies. Attacks are not Spells. Spells have their own base damage, cast speed and Critical Hit chance determined by the skill. They do not benefit from a weapon's inherent damage, attack speed or Critical Hit chance.