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Aalto is a four-star Aero pistol user inWuthering Waves. He is a support character that is focused on buffing his teammate’s damage and Concerto efficiency. Aalto is the only character made to be a pure Aero damage buffer. He is an excellent pick for team compositions that includes great Aero damage dealers like Jiyan.
Aalto is a great character to ascend and build if your main damage dealers are Aero. The boss mat required for ascending Aalto is Roaring Rock Fist, which can be obtained by defeating the boss Feilian Beringal. Other collectibles needed are Wintry Bell flowers and Howler Cores.

Aalto’s Ascension Materials
Shell credits and Resonator EXPpotions can be obtained consistently by spending Waveplates onSimulation training.
Aalto’s regional specialty isWintry Bells, which can be obtained from theBell Borne Ravineregion. Bell Borne Ravine isSouth of Gorges Of Spirits. Like most regional specialties in Wuthering Waves, Wintry Bells can also be easily obtained by buying them fromShifang Pharmacy in Jinzhou.

Aalto’s Mob dropscan be obtained by doing anyforgery challenge or by killing Tacet Discordslike Dreadmanes, Hoartoises, Lava Larvas,etc.
1

40
5,000

2
50

10,000
3

60
15,000

4
70
20,000
5
80
40,000
6
90
80,000
Roaring Rock Fist x16
Where To Get Roaring Rock Fists
Roaring Rock Fists can be obtainedby defeating Feilian Beringal, which is an Aero attribute boss that resides inside theGiant Banyan in the Dim Forest region. The location of Feilian Beringal is clearly indicated on the World Map.
If you are having trouble finding the entrance to Feilian Beringal, you may find it byactivating the Resonance Becon northwest of Giant Banyan. You will be facing a cave that leads to the Feilian Beringal right after teleporting to this Resonance Beacon.
60 Waveplates are required to collect the rewards for defeating Feilian Beringal, and you can obtaintwo to three Roaring Rock Fistseach time.
Where To Find Wintry Bells
Wintry Bells can be obtained by gathering them from theBell Borne Ravine regionor by buying them fromShifang Pharmacy.
Wintry Bells x 24
Wintry Bells x60
You will need a total of60 Wintry Bellsto reachmax ascension rank6 for Aalto.
Wintry Bells Locations
you’re able to gatheratotal of 31 Wintry Bellsby navigating the area around the Bell Borne Ravine.
Start byteleporting to the resonance beacon"Huanglong-Gorges of Spirits", which is close to the weekly bossBell Borne Geochelone. Simplygo around the banksof the river that surrounds the weekly boss to easily grab 31 Wintry Bells.
Shifang Pharmacy
Shifang Pharmacy islocated in Jinzhouand can be easily navigated from the World Map. You canbuy a total of 15 Wintry Bellsfrom Shifang Pharmacy by spending Shell Credits.
Each Wintry Bell costs3,000 Shell Creditsand a total of45,000 Shell Creditsare needed to buy 15 Wintry Bells.
Shifang Pharmacy has a weekly reset in which all items are restocked. The shop resets at4:00 AM CST, Asia(UTC +8), every Monday.
Aalto’s Forte Ascension Materials
Aalto Forte Ascension requiresPhlogistons, Monument Bells, and Howler Cores.
Since Aalto is a support character, not all of Aalto’s forte needs to be leveled up, and you can check out ourAalto build guidefor Forte upgrade priority.
Phlogistonscan be consistently obtained by completing theForgery Challenge Marigold Woods in the Central Plains. Other but temporary sources include buying them from theSouvenir Store in Jingzhouby using Wood textured Shards, and buying them from theWeapon shop in Tiger’s Maw Mineby using Lampylumens.
Weapon Shop in Tiger’s Maw Mine is unlockedafter completing the Exploration Quest “Tiger’s Maw”.
ThenHowler Corescan be obtained from all forgery challenges andby killing Tacet discords. Some of the Tacet Discords that drop Howler Cores areHoartoises, all types of Dreadmanes, all types of Hooscamps, etc. The areasurrounding the Giant Banyanin the Dim Forest Region has plenty of Hooscamps. This is a great spot if you are looking to farm a lot of Howler Cores.
Finally,Monument Bellscan be obtained bydefeating the weekly boss, Bell Borne Geochelone. Monument Bells are required for unlocking Inherent Skills and upgrading skills past level 6.