There are 9 total items to gather in Unto The End. Some are story related and some are not. It is unlikely that you will get all the missable items without a guide. The best one to follow is linked below.
Not really a spoiler, but just in case you care, The items include:
*** Spoiler - click to reveal ***1. Old Key (Story Related)
2. Meditation Bead
3. Light Stone
4. Heavy Key (Story Related)
5. Iron Helm
6. Notched Bone
7. Woad Kipu
8. Pristine Shard
9. Wanderer's Totem
For all achievements in the game, you can follow this awesome guide on YouTube:
All credit to Trophy Tom. Please like or subscribe to support him. Please note how he has conveniently labeled sections of his video based on which achievement is next or what item you are tracking down, this can be seen if you watch his video on YouTube on the video progress bar instead of the imbedded video here on True Achievements. It is a very well done 100% guide.
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