I got this on my first playtrough even without finishing the archive. I didn't get it on any other archives. Even the second time I got 100% support items agiain.
I think this archive is the easiest to collect all items
There are about 3 euphoria items and 5 or 6 life-items, hardest is probably the two life-items popping up at once in the final stage. I recommend playing without using the octo-lock gun, as it is harder to get the support items, especially in the final stage.
The items look like a blue ball (life item) and blach with a pink swirl (euphoria).