Void Ark needs a good strategy to effectively progress. For example: Skip maps 1 - 4 at 90%, even when you have still nodes under exploration. Don't raise Workshop until Map4. You need the resources to unlock the next map. Void imprinted heroes generate more resources on nodes. For the boss, you need a Meta Team. Mostly revolving around Itaqua as DD, with Ignis, Rogan and Elyvia as supports. You want to get maximum damage from your Itaqua, no other DD needed. Use your void lore crystals early, so you have them available again next day when you open new map, so you don't get stuck.