The design of some enemies and bosses are horrible (specially the final boss), full of bullshit mechanics, like unavoidable damage, one shots, stun locks, etc.

Great music and one of the best pixel art works I have ever seen.

Upgrades aren´t very interesting. And I don´t like when games don´t tell you how much each trinket gives you.

I hate when there are secondary missions or special quests that the game doesn´t tell you about, so you end up completely missing them, or spoiling them by accident. And the worst part is when those missions give you special move sets required to explore certain parts of the map.

The controls sometimes feel unresponsive.

I don´t like world traversal, there aren´t many teleportation points or a fast way to run trough the map, and although it is fun and challenging the first time you visit a zone, passing through the same challenging areas feels horrible, either you take your time every single time, or rush through, risking being hit, stunned, or killed.