Defenses

Pathfinder Gamemastery Guide (Second Edition), page 75

If there’s a physical component that a character could break, you’ll need to determine the hazard’s AC, Fortitude save, and Reflex save, using the extreme, high, and low values (preceded by E, H, or L on the table) as well as its Hardness, HP, and Broken Threshold (BT). When building a purely magical or formless hazard, you can skip this section.

Table 2–15: Defenses

Level EAC HAC LAC E Save H Save L Save Hardness HP
–1 18 15 12 +9 +8 +2 2–4 11–13
0 19 16 13 +10 +9 +3 3–5 15–17
1 19 16 13 +11 +10 +4 5–7 23–25
2 21 18 15 +12 +11 +5 7–9 30–34
3 22 19 16 +14 +12 +6 10–12 42–46
4 24 21 18 +15 +14 +8 11–13 46–50
5 25 22 19 +17 +15 +9 12–14 50–54
6 27 24 21 +18 +17 +11 13–15 54–58
7 28 25 22 +20 +18 +12 14–16 58–62
8 30 27 24 +21 +19 +13 15–17 62–66
9 31 28 25 +23 +21 +15 16–18 66–70
10 33 30 27 +24 +22 +16 17–19 70–74
11 34 31 28 +26 +24 +18 19–21 78–82
12 36 33 30 +27 +25 +19 20–22 82–86
13 37 34 31 +29 +26 +20 21–23 86–90
14 39 36 33 +30 +28 +22 22–24 90–94
15 40 37 34 +32 +29 +23 23–25 94–98
16 42 39 36 +33 +30 +25 25–27 101–107
17 43 40 37 +35 +32 +26 27–29 109–115
18 45 42 39 +36 +33 +27 29–31 117–123
19 46 43 40 +38 +35 +29 31–33 125–131
20 48 45 42 +39 +36 +30 33–35 133–139
21 49 46 43 +41 +38 +32 36–38 144–152
22 51 48 45 +43 +39 +33 39–41 156–164
23 52 49 46 +44 +40 +34 44–46 168–176
24 54 51 48 +46 +42 +36 46–50 180–188
  • The Broken Threshold is usually half the hazard’s HP.

Some hazards, even high-level ones, don’t make sense with a high Hardness value. In those cases, you can skip the Hardness and use the HP values from table 2–7: Hit Points on page 63. Especially for complex hazards, you might want to divide the durability over multiple sections, located in different positions, to encourage teamwork and mobility.