I bought Dead Cells a little while back after the price dropped to $25 (I believe it released at $40). I've been oscillating between thinking it's incredible and thinking that it's too difficult and repetitive. The way that it forces you to play differently almost every single time by virtue of the randomized weapon drops is really cool, and I have yet to find an easily exploitable strategy. You constantly have to make decisions about which of three main stats to increase, and which weapons will complement others.
However, permadeath means that you're constantly retreading the same (randomized) areas over and over again, and even when you're doing well, you'll run into an enemy or boss whose patterns take several tries to learn, resulting in death and a restart. Add to that the length of time that it takes to purchase permanent upgrades and it can be a pretty grindy and frustrating experience. I may just not be skilled enough to really break through and have the game click, hence my experience, but I have enjoyed my time with it much more than with similar recent 2D action platform games (Hollow Knight in particular).