Really fun game. Can be a bit challenging, especially in the beginning.
The first hour of gameplay I was very very hesitant if I had made a good purchase or not, and I was admittedly struggling. I could see there was a lot of meat on the bones but couldn't access much of it. (There are about six different meta currencies- that really could and should be cut down a bit imo)
After a few hours though the game really opens up and you have tons and tons of variation and customization to just about every aspect of your gameplay. LOTS of upgrade menus. Different weapons (Swords, Scythes, Guns, Magic) then tons of weapons within each category (i.e. "Venom Sword" "Executors Sword" "Master Sword" "Healing Scythe" "Quad-Barrel Revolver" etc etc) You can upgrade the rarity AND the levels of each weapon individually with the meta currencies. You can also add gems to your weapons. There are blessings and curses you receive through your runs.... there is a lot.
I think the game could do with just *a bit* more hand-holding as I think it might be really intimidating and overwhelming and just confusing for people who don't live and breath games like Dead Cells. Hardcore fans of the genre will probably hate me for saying that, but more people playing these games means more money for them to grow and improve and keep coming out with new games, so a few more tooltips in-game is a pretty easy trade-off for that. Hopefully devs will continue to adjust and improve the game through it's lifespan.
Anyway, if you are a fan of the genre, or you think the trailer looks cool- check it out! It is fun and worth the time and money imo.