There are many ways to make your units more powerful:
- Star level - Promoting your units to the next star level whenever you have enough shards and Credits to do it increases their power level.
- Unit level - Use training droids to increase your unit’s level to make it more powerful and unlock new abilities or ability upgrades.
- Ability level - Each Ability your unit has can also be leveled up.
- Gear level - Moving up through gear levels is another way to make your units more powerful. Fill each equipment slot with the required gear piece, then tap Upgrade.
- Mods - Learn more about Mods in this article.
- Relics - Learn more about Relics here.
Apart from these upgrades, you might also want to consider your team composition (some units have great synergies) and your leader ability - which can make all the difference in a close fight.