The update has smoothed out the "Pay-to-Win" friction that plagued older versions. In previous iterations, certain boss battles (particularly against Dr. Blakk) felt impossible without purchasing premium currency. The 2.98 update appears to have adjusted the difficulty curve, making progression feel challenging but fair for free-to-play players.
Spend your gold on your "main" slug first (usually the Infurnus) before spreading resources across your entire collection. How to Get the Update slugterra slug it out 1 version 298 updated
This covers key features, changes in v298, and tips to progress faster. The update has smoothed out the "Pay-to-Win" friction