Psychocyberphobia

Description
Can't see your health; Damage numbers are disabled.

Effects
Your health bar no longer displays it's count (a series of question marks "?" are displayed instead) and the health bar's green bar indicator is always seen as empty.

This makes the game more difficult by making it impossible to judge a situation based on health safety; Essentially, it forces you to always assume you're low on health.

Unlock Condition
Reach 3000 health.

The easiest way to earn it is by buying all Toughness Teeth Upgrades and keep every item which increases health in percentile.

Trivia

 * This relic's quote is a reference to a popular proverbial question "Is the glass half full, or half empty?".
 * This relic's name is a reference to the book Psycho-Cybernetics.