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I haven't tested it on the small map, but based on general considerations, I assume that even with reduced requirements of 40 units, they will still only be satisfied in scenarios that are noticeably above average.
I can even offer a bet - you start on the small map as the red Marius (without the Inferno patch), say, 6 times, streaming everything that happens on MyKO. You need to collect 40 demons by day 117 in half of the cases (3 times).
The stakes are negotiable. Maybe someone else will want to join on the same terms.