Fighter / RogueMulticlass Build Guide — D&D 5e

Sneak Attack triggers once per turn, and a fighter’s multiple attacks give you more chances to land it. At fighter 5 you swing twice; if the first misses, the second still qualifies. Action Surge adds a whole extra action — if both normal attacks somehow miss, you get two more rolls. On the one turn that matters, this build almost never wastes its Sneak Attack.

Cunning Action (Rogue 2) adds Dash, Disengage or Hide as a bonus action every turn. For a fighter who normally has no meaningful bonus action outside Two-Weapon Fighting, this is a huge mobility upgrade — hit, disengage, reposition. At Rogue 3, an archetype arrives: Assassin gives Assassinate (advantage and auto-crit against surprised targets during round one), while Arcane Trickster adds Shield, Find Familiar and a Mage Hand that picks locks at range.

Rogue 5 is the deep version: 3d6 Sneak Attack plus Uncanny Dodge (halve one hit per round). You lose the fighter’s third attack at 11 until much later, so the decision is whether Sneak Attack dice and defensive reactions outweigh that third swing. For most campaigns that end around level 12–14, three rogue levels is the sweet spot.

Ability priority: DEX → CON → WIS — Dexterity is your attack stat (finesse or ranged), armour class in medium armour, initiative and Stealth. Constitution keeps you standing. Wisdom guards the save that charms and frightens target.