Because Isaac starts with 3 Guppy items, he begins the challenge as Guppy, which grants flight (a good way of avoiding damage), and creates Blue Flies when dealing damage with Guppy's Hair Ball, familiars, or a co-op baby, which act as a secondary source of damage.
Guppy's Hair Ball generating flies is unique to this challenge, making it considerably stronger than normal.
Guppy's Hair Ball is very difficult to control. It would be wise to spend the first few attempts at the challenge by practicing with it before a real attempt at completing the challenge is made.
Items that increase movement speed can make Guppy's Hair Ball somewhat easier to use. The extra speed will allow for more precise control while also increasing the range indirectly at which the Hair Ball can safely be swung.
Buying 9 Volt from a Shop can allow more Blue Flies to be spawned by Guppy's Head.
This page was last edited on 7 November 2020, at 16:58.
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