As a side note: Please fix your game page's accessibility. It is very hard to read the text, especially for someone who has a hard time identifying colors.
The slime puzzle was a bit annoying to deal with as there is no pull option and there is some issue with clipping from what I could see (it looked like the 3 block slides into the 1 blocks instead of stopping).
Controls are just annoying. Indoor vs outdoor rotate/strafe controls are swapped. Check if there is an option in the plugin to have them match maybe because the indoor controls feel awkward and unnatural for people who have played FPS games and many other FP games. Diagonal movement is also awkward regarding events and stairs/ramps. Turn speed indoors is really slow without using the mouse as well.
Also, try adding a way to review the tutorials, such as by having the control tutorial as a common event then adding an item when the tutorial calls that adds an item that lets you view the tutorial again later. (You can have it check for item and only provide an item if you don't have one and set the item to not be consumable.) There are also plugins that allow you to review tutorials once unlocked.
The slime die (since you only roll one) seemed just really weak compared to the other dice. The vampire seemed to be the best. The lightning dice's description could be made more clear because it sounds like it hurts you.
Fishing was kind of annoying because all you really end up doing is spamming the okay button with a relatively low chance of success.
Would be nice if it was mentioned in-game clearly that continue would reduce your rating.
The arcade game felt weird with the arrows controlling the map instead of the character (I know it technically does control the character, but that isn't how it feels). Killing the rocks seemed kind of pointless though.
There are some things that just felt unusually flat and some objects just aren't very clear what they are.