forma.8

I'll add a hint.
Secret objects in the form of "Tetris" are collected when the portal is activated (see screenshot No. 1), collected one element - flew to the next one, look for a portal in the area, activate it, take the element and go to the next one.
There are only 5 secret elements, collecting them all one after another we fly to the area with the last portal and activate it.
A code for the Temple is randomly generated (see screenshot No. 2), which can be used to get to a secret area where the compass artifact will be located.
The designation of the code symbols (sides) is explained in the picture.
The compass highlights areas on the map (in blue) where there are still uncollected items.
So, after passing the last boss, it makes sense to first of all start collecting parts for the compass; then collecting all 50 gears and energy flowers does not seem difficult.
As soon as we have collected all 50 gears, we return to the location with the last boss and an evil form will be waiting for us there, destroying which is a simple formality.

Having collected 100% of the collected items and received the last upgrade, go to the final boss again.

To collect, you definitely need "Secret Objects". These are figures in the form of "Tetris" that you should collect "Strictly" in a certain order, as indicated on the map:



You should start doing this after the first meeting with the final boss. So that all the necessary upgrades are collected.

Firstly, after collecting all the items, the path code (always different) for the lost temple will be revealed to you.
The key to it is on a mysterious island (the directions correspond to the symbols), but only at night.
Following this path, you will find yourself in a room where you should take the artifact.

Plus, after collecting all the secret objects, the areas where you have not collected something will be highlighted on the map.
If you think that you have climbed everything in a given location, just rub against all the walls. There's probably a secret there.