Andvari
Adventurer
The confirmation roll reduced the chance of critical hits compared to 5E. Death rules are similar to AD&D 1E, as in you don't die until -10 HP.
However, critical hits do not exist in AD&D 1E. So in 1E, at low levels, even though HP counts are lower than in 3E, it's really unlikely you'll be reduced from positive HP to -10 in one hit.
In 3E, particularly with weapons that dead x3 damage on a crit, that can happen fairly easily. As others have mentioned, creatures like the basic 1/2 CR orc with its great axe could potentially instagib any low-level character in one hit. I personally just switched out their weapons.
In BECMI and 2E, you die at 0 HP, so those systems are quite deadly by RAW.
So I'd say 3E is deadlier than 1E, but less deadly than BECMI and 2E.
That being said, I don't recall actually playing BECMI without house-ruling in the -10 HP rules from AD&D 1E.
However, critical hits do not exist in AD&D 1E. So in 1E, at low levels, even though HP counts are lower than in 3E, it's really unlikely you'll be reduced from positive HP to -10 in one hit.
In 3E, particularly with weapons that dead x3 damage on a crit, that can happen fairly easily. As others have mentioned, creatures like the basic 1/2 CR orc with its great axe could potentially instagib any low-level character in one hit. I personally just switched out their weapons.
In BECMI and 2E, you die at 0 HP, so those systems are quite deadly by RAW.
So I'd say 3E is deadlier than 1E, but less deadly than BECMI and 2E.
That being said, I don't recall actually playing BECMI without house-ruling in the -10 HP rules from AD&D 1E.