Perk Die Hard
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	Fallout Tactics requirements Level 2 Endurance 6 First Aid 40% ranks 1 effects When your hit points get below 20%, you get an additional 10% to Damage Resistances. Van Buren requirements ? ranks 1 effects When your hit points get below 25%, you get an additional 10% to Damage Resistances. Fallout: Brotherhood of Steel ranks 5 effects +20 Health Lionheart requirements Level 2 Endurance 6 ranks 1 effects When your hit points get below 20%, you gain +20% to all resistances and your Armor Class goes up by 5.
	Die Hard's picture in FOBOS.

 

Die Hard is a Fallout Tactics and Lionheart perk and a Fallout: Brotherhood of Steel skill (skills in this game work like perks do in other Fallout games).

Fallout Tactics

You don't give up easily, when your hit points get below 20% you get an additional 10% to Damage Resistance.

Van Buren

Davidson in Van Buren had this perk. Combined with his armor and his other perks, like Toughness, Davidson became quite powerful.

Fallout: Brotherhood of Steel

Each level of this skill increases your health for +20 (up to a maximum +200) hit points.

Points requirements

• 1 Rank : 4 Points (+20 Hit points)
• 2 Rank : 8 Points (+50 Hit points)
• 3 Rank : 16 Points (+90 Hit points)
• 4 Rank : 32 Points (+140 Hit points)
• 5 Rank : 64 Points (+200 Hit points)

Lionheart

When your hit points get below 20%, you gain +20% to all resistances and your Armor Class goes up by 5.