Final list of items with proper names:
Coupon Cutter (shop discount)
Nanite Hull (health regen)
Grin and Bear It (avoid damage chance)
Explodifier (x4 missile damage)
Skeleton Keycard (unlimited keys)
Photoelectric (40 energy gained when you take damage)
Lorentz Factor (10 second dilation on room entry)
Blood Avenger weapon (gets more powerful on low life)
Scourge Spread weapon (Thoraxian technology)
Overcritical (x2 crit damage boost)
Dead Eye Module (stackable time dilation on kill)
A Phasing Grace (10 second invulnerability on room entry)
Magic Missile Box (2 missiles per new room)
That's 13 new ones to add to the existing 10. We've more than doubled the count. Only thing left to do is to sort out the icons, do a bit of testing, and make some final adjustments. Thanks to everybody who contributed ideas and joined the discussion. We're taking the game to a new level!