Updated June 2026
100 Days At Sea Class Builds
A strong class pick only reaches its potential with the right gear, companion, and island routing. This build guide covers recommended loadouts for combat, support, and utility archetypes in 100 Days At Sea — pairing weapons from weapons, armor from armor, and companions from companions with each class kit. Builds are labeled solo or co-op where role requirements diverge. Adjust for your island route from seeds and Pearl budget from codes.
Melee DPS Builds
Battle Buku Build (Solo/Co-op DPS): Class Battle Buku (+20% melee). Weapon Iron Sword → upgraded melee from Shipwreck Iron. Armor Iron Armor before Volcano Island. Companion Shark (budget) or Swordfish (premium). Island order: Starter → Jungle → Desert Sand Worm → Shipwreck Ghost Captain. Focus crafting Iron Sword recipe early.
Swordsman Build (Fast Melee): Class Swordsman (+15% attack speed). Weapon Cutlass starter with attack-speed mods. Armor leather tier until Iron Armor. Companion Shark or Magma Golem on Volcano. Excels Ghost Captain add-clear speed on Shipwreck Island.
Raider Build (Loot + DPS): Class Raider (+20% damage, raid loot). Weapon Machete starter plus Iron Sword upgrade. Companion Swordfish. Route Desert and Shipwreck repeatedly for Scrap Metal and Iron before Volcano. Merchant alt account can fund Pearls — this build self-sufficient.
Hero Build (Balanced Endgame): Class Hero (+10% all stats). Weapon Iron Sword + sidearm Flintlock Pistol. Armor full Iron Armor set. Companion Swordfish or Parrot depending on boss. Universal Day 100 build — see survive day 100.
Ranged DPS Builds
Sharpshooter Build (Boss Sniper): Class Sharpshooter (+25% ranged, +10% crit). Weapon Scoped Rifle starter → max ranged before Kraken. Armor Iron Armor for survivability. Companion Parrot or Pirate Gunner. Mandatory for Frost Giant and Kraken weak-point phases on bosses.
Cowboy Build (Budget Ranged): Class Cowboy (+15% ranged). Weapon Flintlock Pistol starter from weapons. Armor mid-tier until Shipwrock Iron. Companion Crab. Pre-Sharpshooter Sand Worm and early Ghost Captain substitute.
Pirate Build (Hybrid): Class Pirate (+15% all damage). Weapons Cutlass + Pistol starters. Armor Iron Armor. Companion Parrot. Flex between melee and gun without respec — strong co-op second DPS behind Sharpshooter.
Tank and Support Builds
Soldier Build (Boss Tank): Class Soldier (+15% defense). Weapon Shield + Sword starters. Armor Iron Armor priority — craft before Volcano. Companion Whale or Turtle. Face-tank Lava Guardian fire waves while team DPS fires. Co-op anchor per co op strategy.
Medic Build (Solo Sustain): Class Medic (+15% health regen). Weapon Iron Sword for self-defense. Armor Iron Armor. Companion Turtle. Craft Medkits from crafting — stock ten before Ice Island. Best solo Day 100 sustain path.
Crewmate Build (Co-op Support): Class Crewmate (+10% team XP). Weapon Flare Gun for team markers. Armor flexible. Companion Cat for reposition speed. Mandatory in four-player groups leveling toward Kraken Zone.
Camper Build (Raft Engineer): Class Camper (+10% building speed). Weapon any — combat secondary. Companion Octopus for passive mats. Focus raft building: Raft Expansion, Container Shelter, Grinder. Weak in combat until team carries boss gates.
Specialist Endgame Builds
Fire Mage Build (Volcano AO): Class Fire Mage (+30% fire, AOE). Weapon Fire Staff starter. Armor Iron Armor with fire resist food from Volcano prep. Companion Lava Snail or Salamander. Clear Jungle mob packs and Lava Guardian add waves. Unlock before Volcano Island — not Day 1.
Ancient Squid Build (Kraken): Class Ancient Squid (+25% water abilities). Weapon Tentacle Summon starter plus Scoped Rifle sidearm. Armor Iron Armor. Companion Dolphin for swim speed stacking. Kraken Zone specialist — save 80 Pearls until Day 60+.
Zookeeper Build (Companion Carry): Class Zookeeper (+25% companion buffs). Weapon flexible. Companion best available — Pirate Gunner or Swordfish amplified. Pair with STRANDEDDEVS chest and Warrior/Pirate chest chase. Treasure Hunter alt for Mystery Crate funding.
Treasure Hunter Build (Loot): Class Treasure Hunter (+25% chest loot). Weapon Compass utility. Armor survival focus. Companion Octopus. Bermuda Island Mystery Crate farmer for Pearls and Ancient Relics post-Day 80.
Economy and Exploration Builds
Survivor Build (Early Solo): Class Survivor (+10% hunger, extra oxygen). Weapon Fishing Rod from crafting. Companion Frog. Starter Island through Jungle Island comfort — bank Pearls for Sharpshooter transition at Desert Island gate.
Merchant Build (Pearl Farmer): Class Merchant (+20% sell price). Weapon any. Companion Seagull for food efficiency. Flip Jungle and Desert resources for Pearls to unlock S-tier classes without code dependency.
Adventurer Build (Speed Scout): Class Adventurer (+15% exploration speed). Weapon Map starter. Companion Dolphin. Seed routing on seeds and seeds — finds chests before Treasure Hunter quality bonus matters.
Night Build (Bermuda): Class Night (+20% night vision). Weapon Lantern starter. Armor Iron Armor. Companion Cat. Final island visibility without torch inventory — pairs with boss fights Bermuda Entity mechanics.
Frequently Asked Questions
What is the best solo build in 100 Days At Sea?
Medic with Turtle companion and Iron Armor is the safest solo Day 100 path. Hero is best if you have 70 Pearls for balanced stats.
Best co-op DPS build?
Sharpshooter with Parrot or Pirate Gunner for ranged bosses. Battle Buku with Swordfish for melee Sand Worm and Ghost Captain.
When should I craft Iron Armor?
Before Volcano Island and Lava Guardian. Recipe requires Shipwreck Island Iron — see items/armor and items/crafting.
Fire Mage or Ancient Squid first?
Fire Mage before Volcano Island (Day 40–50). Ancient Squid before Kraken Zone (Day 60+). Both cost 80 Pearls.
Does Olympian need a combat build?
Olympian is mobility-focused — pair swim speed with Dolphin companion for ocean routing. Add Iron Sword for self-defense on island landings.