1) Buy some Crystal Energy with cash, preferably during a promotional event. Then create a second account. Both your free account and your paid accounts will receive 100 mist every 22 hours (1 ME every 13 minutes). That’s an extra 6,000 - 9,000 crowns worth of energy every day for free (depending on the market rate). This will also give you the energy you need for crafting gear early on in the game.
2) Do the Rank missions. You get valuable rewards, practice, and knowledge of the game.
3) Acquire the proper long-term gear. You’ll have 5* gear eventually, so get the best 2* gear that can be crafted up to 5*. (No 1* gear can be crafted up, so don't waste your money on it.) For a helmet and armor, you’ll want wolver to craft up to Skolver and Vog. Later get an angelic gear for shadow defense. Get and owlite shield and the pierce shield bought with tokens earned from beating the Snarbolax Tier 1 Boss. For your first 2* weapons, get a brandish sword and an autogun. Later get the Antigua gun from Jelly King tokens and the Pulsar from Roarmulous Twins tokens. You'll eventually want to diversify your arsenal with bombs and swords and guns, but get these first.
4) Join a guild. Be respectful and appreciative of whatever help they give you.
faster is not always better though. You're gonna spend a lot of money...pay2win