The method to 100% obtain a whetstone in Backpack Brawl The method to 100% get a whetstone in Backpack Brawl

Backpack Brawl, the whetstone is a core material for synthesizing powerful weapons (such as the Hero's Sword, Flame Sword), but its store refresh has randomness. Today, I will share a method to get a whetstone with almost 100% certainty in Backpack Brawl. In fact, by utilizing game mechanics, you can significantly increase its appearance probability, but it should be noted that there is no method for an absolute 100% drop. Below, let's learn about the method to get a whetstone with a very high probability!

When the whetstone first appears in the store (usually between rounds 3-6), you need to immediately click on the lock icon at the lower right corner of the item (costing 0 gold coins). After locking, the whetstone will not be judged by the system as "skipped", so its appearance probability in subsequent refreshes will not decrease. If you skip without locking, the system will temporarily block the item for the next 2-3 refreshes. For example, if a whetstone appears in the first round and you lock it, then continue refreshing, it will greatly increase the probability.

As the refresh progresses, the store will gradually eliminate low-value items (such as the initial wooden sword, stone bag). With each elimination, the whetstone's relative appearance weight will increase. You need to actively purchase or skip other items: prioritize buying discounted 1-gold items (such as garlic, stone bag) and keep backpack space, directly skip non-core equipment (such as broom, spiked shield) to accelerate the system's elimination process.

Pyromancer Build: Rounds 3-5 are critical for synthesizing the Hero's Sword (Wooden Sword + 2 Whetstones), during which the base probability of whetstones is higher. After purchasing the wooden sword at the start, reserve 8 gold coins. If no whetstone appears in the 3rd round, spend 2 gold coins to refresh the store once. Ranger Spike Build: Need to obtain a whetstone before the 2nd round to enhance weapons (such as Iron Sword + Whetstone). It is recommended to choose the Wooden Sword + Garlic at the beginning; if no whetstone appears in the first round, sell the wooden sword and start refreshing. For the Berserker, the demand for whetstones is lower, only consider refreshing when they are on discount. Theoretically, everyone just needs to lock and then refresh, which can greatly increase the refresh probability, and this is more than enough for our daily battles.

The value of the whetstone lies in its pivotal role in synthesis (for example, 2 are needed for the Flame Sword, and another 2 for upgrading the Flame Short Sword). By locking upon first sight, accelerating elimination, and timing the refresh, you can increase the acquisition efficiency by over 80%. Combined with optimal operations during the golden period for many professions to avoid resource stagnation, this lays the foundation for building up your build.