We've got you covered if you're looking for a detailed mission list and their chronological order in Dead Island 2.
Dead Island 2 Legendary Weapon Locations - where to find all the game's unique weapons
Walkthrough - Dead Island 2 Guide - IGN
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Dead Island 2 Guides Hub
Dead Island 2 - All Story Quests (and how long to beat?)
Dead Island 2 Legendary Weapon Locations - where to find all the game's unique weapons
Dead Island 2 mission list: How many campaign quests are there? - Dexerto
Dead Island 2 All Side Quests Guide
Dead Island 2 - All Story Quests (and how long to beat?)