Build 18 (v0.2.4.5) is an update that was released on April 23, 2014. It has received a hotfix.
This updated included new major features: crafting (with the quest Tale of Two Blacksmiths introducing it), an overhaul of the character sheet, Veteran mode, more randomness in enemy spawns, and dual wielding of pistols.
Each blacksmith has their own unique style that will be imprinted upon every item they craft for you.
Over 150 crafting recipes have been added to the game.
The character sheet has been overhauled to provide a much more detailed view of your stats from gear and skills. Offensive and Defensive Ability rollovers now display the chance to hit/crit based on your last target/attacker.
Normal difficulty now has "Veteran" mode, which boosts various enemy stats, notably damage and also increases the number of champions and heroes that can spawn. Veteran isn't meant to be brutally challenging but should be enough to make normal difficulty more interesting for skilled players, while allowing us to balance the default for the average player. Veteran can be turned on and off from the character selection screen. Characters who play through normal difficulty on veteran mode should end up a little better equipped to tackle epic difficulty once it becomes available.
Increased randomization of enemy spawns - a new method of placing spawn proxies allows us to provide much greater randomization in terms of how enemies are distributed. You'll now find that the location of enemies is more random and that they can sometimes appear in much larger and more diverse packs.
Dual wielding of pistols is now possible via skills granted by items. One such item can be crafted with the new blacksmith.
Improved default lighting in outdoor environments.
Increased the distinctiveness of some environments a little bit by adjusting textures, colors, fog, lighting and asset use.
Added faction indicators to the conversation window. Shows the faction of the NPC in the conversation.
Pets now contribute to Monsters/Champions Killed and Greatest Monster Killed.
Experience formula that determines how much experience is gained from killing enemies has been adjusted to slow down leveling. Based on the results, further adjustment may be required. This change shouldn't affect current character levels.
Compass north indicator is now correctly aligned to world map north direction.
Killing Direni for the Lost Journal quest now has additional rewards.
Nightblade: Lethal Gambit buffed a bit and expanded to hit three targets. Modifier now has a chance to freeze enemies.
Nightblade: Cold damage added to Execute in exchange for some of its %weapon dmg, which was scaling up too quickly.
Hellhound should now tank better in defensive mode.
Reduced time until out-of-combat regeneration activates from 3 to 2 seconds but cut the regeneration rate from 20x to 5x. Should make it useful for healing up without potions between fights and still possible to use if you can break out of combat but with the cost of requiring more time away from combat.