This is a simple time survival game. Players need to face endless enemies within 15 minutes, and avoid the enemy's siege through moving and skills. During this period, players upgrade to select random skills, defeat bosses to break through skills, and match a set of skill routes that help survive until the last second. When the enemy is too powerful to pass the level, the player can also use the resources of the level to upgrade the talent, and integrate the talent effect into the skill to obtain a more powerful effect.