The Emergency Shell is a premium armor that, every time you get hit (regardless of whether you actually take damage or proc a dodge) clears all the projectiles on the screen and activates a shield.
The duration of the shield depends on the rarity of the armor:
| Rarity | Duration (s) |
|---|---|
| Common | 1.0 |
| Uncommon | 1.2 |
| Rare | 1.4 |
| Epic | 1.6 |
| Legendary | 1.8 |
| Mythical | 2.0 |
| Exalted | 2.2 |
| Deluxe | 2.4 |
Notes:
- Even without the emergency shell, you normally have a brief immunity from further damage, which is why, for example, in the Ice Castle angel room where there is a hidden treasure behind a mine, you only need to take damage from 1 mine to get it
- As of 2.4.x, you get a shield icon above the player when the Shell’s shield is active for heroes with the shield skill tree (e.g. Fursus) - and it looks like the skill tree bar doesn’t progress while the shield is active, which will hopefully be fixed in the future.