Nice work! I liked how you combined the puzzle and exploration/metroidvania elements. The different mechanics worked well together and the level design did a good job of teaching the player about each element through progressively harder puzzles. The optional logs provided a nice extra challenge.
In my playthrough, I reached the exit early and then had to do a lot of backtracking to complete the map and find all the logs. I like that you gave the player a chance to go back for 100% completion instead of starting over from the beginning, but it felt a little tedious to wander around trying to figure out what I missed. I think this could be improved by adding map indicators for unsolved puzzles and inter-room connections.