lvl1-lvl11: patrol (farm bosses, civilians)
lvl11: heroic and super heroic trials
Beat the story on super heroic while complete all treasure and boss rooms. --- ONLY NEED TO DO THIS WITH ONE HERO
After story: operations (14), legendary quests (50) ---- ONLY NEED TO DO THIS WITH ONE HERO
Grind to lvl60 in patrol/story/etc. if needed
lvl60: DONT PRESTIGE
Repeat 4 more times. With the other heroes, speedrun the story (only beat bosses) for a lot of XP.
With your favorite/easiest hero do the cosmic (and omega) trial.
Prestige the hero and buy and equip a legendary arifact. (costs: 25 or 300 legendary marks)
Grind to lvl 60 >>> change to cosmic/omega difficulty.
Grind to max out the legendary artifact.
Grind money if you dont have the "loot 1,000,000 money" trophy.
Prestige the hero second time.
Upgrade all vendors to level 10 with the donate option.
DONT sell/donate relics, you need 100 of the same type.
Always pick up the money and green orbs (xp).
Use xp, loot, storage, iventory, whatever boosters to speed up the process.
Buy boxes (if needed) for legendary marks and relics. (You need 25+100 or 300+100 legendary mark. and 100 relic of the same type.)