As a fighter (samurai), you gain the following class features.

Hit Points

Hit Dice: 1d10 per fighter level
Hit Points at 1st Level: 10 + your Constitution modifier
Hit Points at Higher Levels: 1d10 (or 6) + your Constitution modifier per fighter level after 1st

Proficiencies

Armor: All armor, shields
Weapons: Simple weapons, martial weapons
Tools: None
Saving Throws: Strength, Constitution
Skills: Choose two skills from Acrobatics, Animal Handling, Athletics, History, Insight, Intimidation, Perception, and Survival

Equipment

• (a) chain mail or (b) leather, longbow, and 20 arrows
• (a) a martial weapon and a shield or (b) two martial weapons
• (a) a light crossbow and 20 bolts or (b) two handaxes
• (a) a dungeoneer's pack or (b) an explorer's pack

 

Fighting Style. You adopt a particular style of fighting as your specialty. You can't take a Fighting Style option more than once, even if you later get to choose again.

• Archery (PHB). You gain a +2 bonus to attack rolls you make with ranged weapons.

Second Wind. You have a limited well of stamina that you can draw on to protect yourself from harm. On your turn, you can use a bonus action to regain hit points equal to 1d10 + your fighter level.

Once you use this feature, you must finish a short or long rest before you can use it again.

Action Surge. Starting at 2nd level, you can push yourself beyond your normal limits for a moment. On your turn, you can take one additional action.

Once you use this feature, you must finish a short or long rest before you can use it again.

Martial Archetype: Samirai. At 3rd level, you choose an archetype that you strive to emulate in your combat styles and techniques. The archetype you choose grants you features at 3rd level and again at 7th, 10th, 15th, and 18th level.

Archetype Feature: Bonus Proficiency. When you choose this archetype at 3rd level, you gain proficiency in one of the following skills of your choice: History, Insight, Performance, or Persuasion. Alternatively, you learn one language of your choice.

Archetype Feature: Fighting Spirit. Starting at 3rd level, your intensity in battle can shield you and help you strike true. As a bonus action on your turn, you can give yourself advantage on all weapon attack rolls until the end of the current turn. When you do so, you also gain 5 temporary hit points.

You can use this feature three times. You regain all expended uses of it when you finish a long rest.

Ability Score Improvement. When you reach 4th level, and again at 6th, 8th, 12th, 14th, 16th, and 19th level, you can increase one ability score of your choice by 2, or you can increase two ability scores of your choice by 1. As normal, you can't increase an ability score above 20 using this feature.

Extra Attack. Beginning at 5th level, you can attack twice, instead of once, whenever you take the Attack action on your turn.

The number of attacks increases to three when you reach 11th level in this class and to four when you reach 20th level in this class.