We like to call Dead Cells a RogueVania (yeah we like to make up words), and by that we mean the illegitimate child of a modern Roguelite (Rogue Legacy, Binding of Isaac, Enter the Gungeon, Spelunky, etc.) and an old-school MetroidVania (Castlevania: SotN and it's ilk).
Regarding the latter, Interconnected levels and progressive unlocking of access to the island provides you with a real incentive to explore your surroundings. Add in a degree of evolution for your character and permanent weapon upgrades and you can see where Dead Cells borrows from the long line of MetroidVanias that precede it.
At the end of the day though, it's YOUR skills as a player that matter most! Roguelites are about constantly getting better, until what was an insurmountable obstacle becomes a walk in the park. Unforgiving combat wed to the absence of any kind of safety net makes for an adrenalin pumping ride each and every run and unrivaled replayability.