Beta Badge

The Beta Badge is an item that can only be used once. It will kill every enemy in the current room that is not one of the following droid types: Average, Strong, Tank, Hunter or Gunner, meaning it can kill droids stronger in later worlds like Xero Droids and Rapid-Fire Droids. It can only be used once, whilst its counterpart or alternative, Alpha Badge, can be used twice.

Appearance
The Beta Badge is a neon green badge in the shape of the Greek letter Beta (β).

Tips

 * You can use this to clear a room entirely as long as they aren't the droids listed on the tooltip.
 * This still won’t affect droids on the list if they’re 2.0 or 3.0.
 * Enemies found in The Darkness are still affected, with the exception of The Shadow.

Trivia

 * Beta Badge is the counterpart to the Alpha Badge, which instead kills the droids that Beta Badge can’t kill.
 * This items' tooltip doesn't fit with the rest of the items that only affect droids, as the item also affects enemies found in The Darkness, while other items that say the same such as Shutter Shades can't be affected by them.