Assassin's Creed Odyssey
93 Achievements
1,850
129-157h
Misthios in Training
Complete 20 Bounties, War Contracts, or Naval Quests from Message Boards.
20
8.71%
How to unlock the Misthios in Training achievement in Assassin's Creed Odyssey - Definitive Guide
Bounty on mercenaries, soldiers or bandits are the easiest ones, considering that this bounties are completes without having to come back and talk to an NPC.
To unlock this achievement you need to complete a total combined 20 of the side missions 'Bounties', 'War Contracts' or 'Naval Quests'. You pick these up from the statuesque notice boards in towns as well as on the mast on your ship. These are timed, usually for 24 hours. There are an abundance of these, far more than 20 and they update regularly so don't worry about doing every one you see if one has objectives that you don't fancy, or if you just prefer to do the Bounties over the other two.
Naval Contracts typically have you sailing the Aegean/Mediterranean seas destroying boats. Bounties typically have you killing bands of soldiers or mercenaries at a certain location and War Contracts typically have you killing leaders and destroying resource crates all over Greece. Though sometimes the objectives differ slightly, such as there being a Bounty to destroy ships, rather than it being a Naval Contract.
Complete a combination of any 20 of these such missions and the achievement will unlock.
I focused only on the plot and additional quests, so I finished it off at the end of the game.
The big advantage of fulfilling contracts is the reward - as a rule, they give a lot of money or some other goodies.