Blue Jackal

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To see a Blue Jackal, you must play the level, Metropolis on any difficulty. Kill a Jackal on the Scarab. If it is on the right place, it will appear blue, as though it were inside the Scarab. This is due to error in ground establishment on the Scarab (a part of the Jackal is "inside" the Scarab, and anything labeled as "inside" assumes a blue tinge). It may work with other varieties of Jackal. Also, if you melee the body, it will change to other colors, strangely including yellow and red.