Topaz Brooch

Topaz Brooch is a new item in Risk of Rain 2. It grants the player 15 barrier upon killing any enemy or boss. Barrier is a special type of health added in the Scorched Acres update which is added on top of max health and slowly decays over time. The maximum amount of barrier obtainable is equal to 100% of your total health, meaning that if you have 400 HP and 100 Shields you will be able to attain 500 Barrier on top of that, giving you a total of 1000 health.

Barrier does not grant one-shot protection, but also doesn't interact with your HP based one-shot protection.