Have a second inventory page that get used for per-level items. Items are not allowed to be moved from the second page to the first or vice versa, and items like keys go into the second page.
On the inventory screen, use B to move between pages perhaps? And have a line under "pause" that tells you that you can swap.
Have a second inventory page that get used for per-level items. Items are not allowed to be moved from the second page to the first or vice versa, and items like keys go into the second page.
On the inventory screen, use B to move between pages perhaps? And have a line under "pause" that tells you that you can swap.