Athena dash = easy mode so always pick that up if you can. It will teach you how to better dash through attacks as well, since that's the best way to deflect some projectiles back at enemies. My favorite thing to do with this boon is insta-kill the witches with the giant orbs by deflecting them back at them.

Then the general rule is fast firing, weak moves get boons that add a flat +damage like Zeus, Ares, and Dio, and the slow but powerful moves get +% damage, which is basically every other God.

I would advise looking up the "skill trees" for boons, so you know what has to be picked to have a chance at duo and legendary boons, which are usually the best in the game. Generally until very late in the game when you have a ton of the fated dice from the mirror, it's best to just roll with your first few boons and try to build off of them instead of forcing a build.

Same here. The advice I've got is to rely on Athena's deflect abilities and really focus on the way the enemies behave before focusing on how to dispatch them. I'm getting better but I can't get myself to focus on stuff much anymore, so a game that requires persistence is difficult for me to even sit down and play.

Early on you should be playing ranged, and trying to stay away from stuff. Melee requires knowing enemy patterns more.