Board Thread:Questions and Answers/@comment-7008384-20130418021845/@comment-5706972-20130418124300

The 'top' players will tell you to go 100% energy or 100% attack - of course a lot of them have multiple accounts and can say that (they have 1 or more accounts for each).

Odyssey bosses have hit points based on your 'Recommended front line', and give event items based on their hit points. My main account has bosses with almost double the hit points, and gives almost double the 'keys' (in this event) than the account on my itouch that has all of the cards I don't want taking up space in my main deck. Ultimately, the amount of Atk needed to defeat these bosses depends on how good your cards are. If you have 2 devices, and intend to make one 99% energy - I would say about 50 Atk would get you past the Odyssey bosses (assuming you have a low quality deck - as you don't need much to run Odyssey). So if you have 50 Atk and 10 Def (no need for Def on an Odyssey account) - you can put the rest all into energy...

A Raid account can get by without much energy if you are in an active guild - one that pulls bosses and invites you to it. If you are searching on your own, you will need considerably more energy to find bosses. How much energy you need depends on how active you are - I had 65 energy for the first 2 months of play, because I made a point to be on at least every hour (the only time you lose out is when you sleep). I put considerably more into energy when I started trying to rank in Odyssey, but it is difficult to have 'well-rounded' stats and be competitive in any/all events.