Many of the upgrades in Revenge of the Savage Planet are unlocked via story progress and are required to complete the game. However, there are some optional improvements you can make early on that'll make a difference.
Rusty Rabbit turns a typical Metroidvania format into a rich narrative experience with a unique setting, engaging characters, and an unexpected emotional depth connected to Stamp's journey.
"Mandragora: Whispers of the Witch Tree presents a gothic world where its brutal combat challenges traditional notions of difficulty, blending influences from both Castlevania and Dark Souls."