-Play in the Arena as much as possible so that you can rack up Arena Bounties. Spend those bounties on arena crates for a better chance at getting rare, high tier heroes essentially for free.
-Save your bounties so that you can buy the better tiered heroes. The rewards correspond almost identically to the normal hero crates, meaning that a gold arena crate will earn you a tier 2 hero with a high chance at a tier 3 hero, for example.
-The more difficult a level is, the more likely you are to earn Corusca Gems or high tier heroes on it. Replay the tougher levels (as tough as you can beat) over and over for a higher chance at more and more rewards.
-If you want to gain experience points fastest, so that you can rank up, play the levels which require you to spend more energy to beat. Generally, a mission that costs you 4 energy will earn double the experience points as a mission which costs 2 energy to play.
-When you are sacrificing hero cards to train other heroes, watch out and make sure that you sacrifice cards for gaining cards that have the same affinity. Do this and every one of the cards will earn double the experience points.
-When a hero hits level ten, you can promote them. The train button will become the “promote” button and the game will tell you what items you need in order to promote. Although you can skip that and just use corusca gems if you want to.
-Watch out for special, time-limited missions to show up in the Special Mission tab – for example, Smuggler Saturday, which specializes in training and promotion items for smugglers. The developers should be expected to add limited time event missions with huge rewards in this mode as well. For example, they could add extremely nasty and difficult missions that can give four and five tier heroes.
-Plus, whenever some kind of new Star Wars media comes out, such as a movie or a television show or some kind of special anniversary, look for new special missions and heroes that are designed to commemorate that new release as well.