Pierce is one of the Forms of the Service Weapon. It usually becomes available for construction as the fourth Form during the mission Old Boys' Club, when Jesse Faden has gained access to the Research Sector and the required materials.

Characteristics

By functionality comparable to a railgun, Pierce charges a powerful, single shot capable of destroying the architecture of the Oldest House and striking enemies through walls and behind cover. Only two rounds are available before the weapon has to reload, each one needing to be charged by holding the trigger. The initial charge and cooldown of this Weapon Form cause it to be heavily reliant on Jesse Faden's accuracy.

Construct Pierce

As other Forms of the Service Weapon, Pierce can be constructed at a Control Point requiring Source and materials as listed below. If any of the components has not been collected before and is completely missing from the Loadout, the construction option will not be available.

Level 1	Source	Materials
	24,000	Intrusive Pattern × 12 Astral Blip × 8

Upgrade Pierce

Pierce can be upgraded twice as an Astral Construct at a Control Point when the required materials have become available to Jesse Faden. The option is shown, together with the exact numbers needed, when at least one specimen of each material has been collected and is present in the Loadout. On top of materials, Source is also consumed in the upgrade process. Each upgrade unlocks an additional Mod slot and increases the weapon's base damage.

	Source	Materials	Upgrades
	24,000	Ritual Impulse × 10 Entropic Echo × 5 Hidden Trend × 3	Level 2: Unlocks second Mod slot; increases base weapon damage
	36,000	Remote Thought × 15 Corrupted Sample × 3 House Memory × 3 Untapped Potential × 1	Level 3: Unlocks third Mod slot; increases base weapon damage

Exclusive Mods

The following Weapon Mods are exclusive to the Pierce Form:

Mod	Effect	Maximum bonus	Notes
Pierce Aimed Fire Boost	Increases damage when aiming	+65%
Trauma Ammo Refund	Ammo gained from taking Melee damage	≥ +16%	Available only with The Foundation installed or in the Ultimate Edition
Custodial Readiness	Decreases charge time	V -100	Unique "absolute" Mod; reward for cleaning another three fine messes: Burn the Dark, Clear the Mold and Nourish the Plants (available only in AWE or in the Ultimate Edition)
Pierce Zoom Boost	Increases the zoom	+35%

Gallery