Thank you - I'm really glad you had a lot of fun with malViolence and its many puzzles! The Zero Escape comparisons are absolutely spot-on - it was one of the games that influenced malViolence's development.
About the locations of the two items - you're absolutely right that their hitboxes are way too small. I'll probably make them larger in a later update - so that future players can find them more easily.
Nonetheless - I'm happy you enjoyed everything else, and I look forward to watching your playthrough!
(Also Astolfo fan? *shakes hand* Good taste.)