Blueprints are a collectable in Heart of Chornobyl that unlock upgrades for various weapons and armors, similar to the Flash Drives in Clear Sky.

List of all blueprints, by item

(WIP)

Weapons

AS Lavina

• Blueprint: Adjusted Bolt Locking Lugs: Found at the Swinery, hidden on a support beam in the eastern barn. Reached by moving a box to the northern shelf, climbing up to the roof and climbing onto the beam via a hole in the roof.

Integral-A

• Blueprint: Return Mechanism Sleeve Tightener: On a corpse in the Hydroelectric Station's underground workshop. The body is laying against some lockers, behind the broken Scanner.

M10 Gordon

• Blueprint: Rubber Layer: Given by The Ninth during The Lost Boys if Skif sides with him, or can be found in a backpack on the roof of the Iron Forest Gate building.

Kharod

• Blueprint: Counterbalance: Found in a backpack hidden in a small ally at the Outer Checkpoint.

Rhino

• Blueprint: Buckshot Conversion: Found at the Fairy Tale Pioneer Camp, on the roof of the north-eastern building, on the little balcony in a safe. This blueprint additionally unlocks the Ergonomic Handguard upgrade.

VS Vintar

• Blueprint: Return Mechanism Sleeve Tightener: Found at the Port Cranes, in a duffle bug on the second floor of the building.

Armors

SEVA Suit

• Blueprint: Protective Coating: Found in the Death Cave, in a Backpack next to the skeleton with an Artifact.

Seva-D Suit

• Blueprint: Aramid Lining: Found in Wild Island at a waste dumping area north of the Shelter. In the underground access in a duffle bag next to a body, guarded by Burers.
• Blueprint: Camel Hydration System: Found in a safe in the Concrete Forest underground. Safe is found in a trapped room, found by going through a gate on the south side of the hallway with the Lightning Ball.

Seva-V Suit

• Blueprint: Protective Coating: Found at the Canning Factory in the northern warehouse, in a duffle bag in the back. Requires platforming on shelves to reach.

Sphere M20 Helmet

• Blueprint: Aramid Lining: Found in a safe, on top of a crumbling concrete structure south west of the Plant. The safe can be reached by jumping into an enormous Space Anomaly south of the Rostok trading hub, near the Bar.

PSZ-12V Bulat

• Blueprint: Camel Hydration System: Found in a backpack near a Scanner at the highest climb of some metal scaffolding east of the SKD Assembly Unit.

Exoskeleton

• Blueprint: Elimination System for Poisonous Substances: Found in a backpack at the Military Checkpoint, on a table at the end of the barracks.

Cuirass Exoskeleton

• Blueprint: Elimination System for Poisonous Substances: Found in a backpack on the roof of the Krug Antenna Complex detached substation.