Headquarters progression and Penny’s Rubber Ball unlock
Quick answer
The Headquarters assault is the endgame route introduced in Sunscream: assemble a bomb through continued runs, infiltrate MKing headquarters, defeat the CEO and finish the attack. Penny’s separate unlock requires three active Rubber Balls in the backpack.
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Separate an ordinary win from Headquarters
Defeating a normal route’s boss is a progression step, not the complete Headquarters finale. Continue surviving runs and collecting the materials needed for the bomb. The developer describes Headquarters as a multi-stage assault; prepare for more than a single ordinary boss stop.
Use the camp’s progression objects
The Sunscream update moved the wardrobe to the campfire and put bomb assembly near the Investigation Board. Boss victories can also supply memo snippets for the camp’s story record. If you are looking for the former wardrobe location, inspect these camp objects rather than assuming the interface disappeared.
Unlock Penny on a separate build goal
To earn Juggler and unlock Penny, equip three Rubber Balls and keep them active. Her Funny Balloon launches periodically or through triggers, seeks enemies and explodes. After unlocking her, look for compatible item triggers instead of assuming her signature item behaves exactly like your previous survivor’s weapon.