code/__DEFINES/dna_infuser_defines.dm

DNA_INFUSION_NO_THRESHOLD	just clarifying that no threshold does some special stuff, since only meme mutants have it
DNA_MUTANT_UNOBTAINABLE	doesn't show up in the entry book, isn't a valid infusion
DNA_MUTANT_TIER_ZERO	tier 0 mutants, roundstart, cosmetic, or bonus-less infusions
DNA_MUTANT_TIER_ONE	tier 1 mutants, job-related mutants, easy infusions
DNA_MUTANT_TIER_TWO	tier 2 mutants, harder to make infusions
DNA_MUTANT_TIER_THREE	tier 3 mutants, requires cooperation with vatgrowing xenobiologists, outwardly and plainly strong. SOON
DNA_INFUSER_MAX_TIER	dna infuser won't upgrade past this tier

Define Details

dna infuser won't upgrade past this tier

just clarifying that no threshold does some special stuff, since only meme mutants have it

tier 1 mutants, job-related mutants, easy infusions

tier 3 mutants, requires cooperation with vatgrowing xenobiologists, outwardly and plainly strong. SOON

tier 2 mutants, harder to make infusions

tier 0 mutants, roundstart, cosmetic, or bonus-less infusions

doesn't show up in the entry book, isn't a valid infusion