Horizon Forbidden West's sidequests are separated into two categories: Side and Errands. As if the game doesn't already have more than enough activities to do, completing these will earn players XP, Skill Points to use in the skill tree, and sometimes, powerful new weapons to add to Aloy's machine-killing arsenal. In the town of Chainscrape, players can find a new Errand called "A Bigger Boom" once the shops and merchants open up after the story mission "To the Brink" has been finished.
A Bigger Boom Side Quest Walkthrough
Starting the Errand
Horizon Forbidden West players will find the errand in Chainscrape and will need to speak with Delah and Boomer in the southwestern corner of Chainscrape. They need some parts to make the prototype for a javelin thrower, which is officially called the Spike Thrower. The sisters want Aloy to collect a Fanghorn Rib and three Charger Horns.
Where to Find Fanghorn Rib
To get a Fanghorn Rib, head to the area southeast of Chainscrape. If players have the errand activated in the menu, there should be two yellow circles. Go to the east-most circle and search for Fire Fanghorn enemies. Defeating them will drop the Fanghorn Rib.
Players should use their focus with the right stick to check the machine name to make sure it's the correct one. Once the Fanghorn is defeated, go up to it and hold Triangle to grab its loot.
How to Get Charger Horns
Now, from the Fire Fanghorn area, head east to the Charger Mount Site. There will be plenty of Charger's walking about, but still, make sure to use the focus ability to check the machine names. The only way to get Charger Horns is to break off its horns by inflicting Tear damage. If the machine dies before its horns get detached, players won't be able to loot the material for the quest. Use an arrow type with strong tear damage, and the horns should fall off in one or two hits. Grab three of the Charger Horns and return to Delah and her sister for a reward.
A Bigger Boom Quest Rewards
Players will get the Prototype Spike Thrower weapon, which can be thrown to hit enemies at long range. They'll also get one skill point and 1170 XP. To equip the Spike Thrower, open the menu with the touchpad, and go into the Inventory. Go to weapons, and then equip the Spike Thrower to a free slot.
Horizon Forbidden West is available now for PS4 and PS5.
