Shadow of the Tower
A Protocol Space containing the unknown. Explore it properly and you might find some operator skill leveling items.
"Touch the Originium in your hand. Feel its heat and coldness. Sense its satisfying solidity and ethereal touch."
Dungeon Info
TypeProtocol Space
SeriesProtocol Space: Skill Up
Rec. Operator Lv.Lv.20
Stamina40
Mechanics
Enemies have more HP.
Enemies can take more Stagger.
Finishers deal much more DMG to enemies.
Enemies can take more Stagger.
Finishers deal much more DMG to enemies.
Enemies
Rewards
Operational EXP ×240 Operational EXP ★★★★★ Raises the Endministrator's Authority Level. 
Protoprism ×21 Protoprism ★★★ A material that upgrades operator skills. Overview › Tips on Defeat
1
In this Protocol Space, try applying Staggered quickly, then use Finishers to quickly defeat enemies.