Congratulations on your first game. I want to take a second to appreciate the ladder implementation, it feels better than most games. I also like the voice leading you to the right path, reminds me of Stanley Parable for a little bit. I noticed one thing that could be improved:
Level Design
Ok so boom, you need 3 items to start the ritual. Fair enough, an immersive way to gate progress. But sadly, the level design makes it a real chore to find said items. Why is the altar all the way up a staircase at the edge of the map? For a collectible type objective, you need to put the finish line in the middle of the map, connected to the item locations in each possible direction. This helps with orientation and leads the player naturally so they don't have to go in a random direction hoping to find a small item. Rule of thumb is NOT to aim for an "Egg Hunt" experience where the developer hides the eggs (key items) in "bushes". This makes it so that when the player does find the item, it won't feel like a reward for their ingenuity but a relief because they found it by chance. Putting the altar in the middle will also avoid having to add an immersion breaking "Please turn back" warning text. Other than that there are some small things like the player not being able to fit through a gap big enough for a person like the one to the left before the door to the altar.
Overall, a solid first entry. Good luck on your next projects.