Nightwave is Warframe's free battle pass system, replacing the old Alert system. It offers a rotating series of challenges (Acts) that reward 'Creds' and 'Standing' with Nora Night.
- Acts: Daily, Weekly, and Elite Weekly challenges. These range from completing specific mission types to killing certain enemies or using specific abilities.
- Nora's Creds: Earned by gaining Nightwave Standing. These can be spent in Nora's Offerings store for unique items, including Orokin Catalysts/Reactors, Forma, weapon blueprints, cosmetic items, and rare mods.
- Rank Rewards: As you gain Nightwave Standing, you'll progress through ranks, unlocking various rewards like cosmetics, resources, and even Umbra Forma.
- Catch-up Mechanics: If you miss a week, you can complete previous weeks' challenges to catch up on Standing.
Nightwave is an excellent source of valuable resources and items, especially for new and mid-game players. Always try to complete your weekly challenges.