If you are trying to push a Diablo 4 character into a stronger endgame setup, weapon expertise is one of those small systems that is easy to overlook. It can also take far longer than it should if you level it during normal combat. A quicker option is to use the training grounds, where you can focus on one weapon type without dealing with random enemies, travel time, or a messy battlefield. It is a handy trick when you are also sorting through your D4 items and want your build ready for tougher content.

Start With the Right Setup

Before you begin, switch the world difficulty to Normal. This matters because the method works best when the training dummies can be hit repeatedly without interrupting your rhythm. Head into the training area, open your skill configuration, and check which weapon Whirlwind is using. Do not leave this to chance. If the skill is tied to the wrong weapon, the time spent attacking the dummies will not help the expertise level you actually want.

• Set the difficulty to Normal.
• Choose the weapon type you want to improve.
• Assign that weapon to Whirlwind.
• Stand close enough to the training dummies for steady hits.

Why Whirlwind Works So Well

Whirlwind is useful here because it keeps dealing hits while you move around the dummies. You are not waiting for individual attacks to land, and you do not need to reset a target after every swing. Start the skill near the dummies and let it run for roughly five seconds. That short burst is usually enough to produce a noticeable jump in the selected expertise. It feels almost too simple at first, but the speed adds up quickly.

Compare the Quick Method

Repeat It Without Wasting Time

After the first Whirlwind burst, check the expertise screen and confirm that the intended weapon received the progress. If it did not, stop and review the skill assignment before trying again. Once everything looks right, repeat the same five-second attack with each weapon type you want to train. You will soon notice that this is faster than waiting for the right enemies to appear during regular play. When the levels are finished, the extra power and flexibility make it easier to fine-tune your build with useful Diablo 4 materials already in reserve.