Pros:
+ Extremely innovative and interesting metroidvania with an engaging story, lore and focus on philosophical themes
+ Tens of cool weapons to obtain and almost every one of them is useful in different situations
+ Fascinatingly unique abilities, upgrades
+ Amazing art and character designs
+ Graphics pop really well on handhelds like the Switch
+ Really good music for the most part, even listenable outside of the game which isn't always a given in metroidvanias (check out Cellular Skies if you're unsure)
+ Fun to speedrun
+ Sets up an infinitely entertaining storyline that I can't wait to see completed

Cons:
- For such a fascinating and deeply layered game, its ending and final boss is a bit of a letdown. Not spoiling anything, but the main character is seemingly given an option to choose his ending or at least affect it in some way, but then it's not carried through. In general, the ending feels just a tad bit unfinished even though the rest is phenomenal
- Secret Worlds should maybe be just a bit easier to find
- A few tracks can get a bit jarring when repeated, like Inexorable
- Music also doesn't properly loop around, the tracks just abruptly end and start back up from the beginning again without any mixing which can break immersion
- Some bosses are great, while others are easy button-mashers if you know the exact place where to stand
- Fast travel can be a bit of a pain and is improved upon greatly in the sequel
- Some weapons and abilities feel a bit clunky to use with the aim lock controls