Skills are special abilities your tank can utilize to change the tides of battle. A commander can only equip four skills during battle and cannot change them once they have entered the battlefield. As such, it’s important to understand what role you plan to fill during battle.
Players can learn more skills by using Facility Building Tickets. These items will unlock access to additional skills, increasing your options in battle. These tickets are awarded for completing certain achievements and some of the tutorials.
Skills can also be upgraded to improve their effectiveness and utility during battle. This is accomplished by deploying Researchers to skill facilities. Players can choose to deploy researchers to improve the skills stats, or unlock Elite Skills. Elite Skills add to the functionality of a skill, giving it additional power and utility. Keep in mind that in order to unlock Elite Skills, you must have the required number of researchers. Players can equip one Elite Skill upgrade to each equipped skill, however if you complete all the Elite Skill upgrades for a skill you have the option to equip two.
If you need to change your research deployment, buy a reset ticket. This will allow you to redeploy your researchers however you wish to.