Each floor has a difficulty associated with it that determines what [[chaos]] [[enemies]] can spawn, as well as what kinds of rewards can drop in terms of equipment, [[shards]], [[Crafting Materials|crafting materials]], and [[mods]]. <br>
'''Note:''' Completing an [[Expeditions|expedition]] will automatically set your floor to the minimum floor in it's range. This does not apply to [[Expeditions|Chaos 10 expeditions]]. <br> In order to access a specific chaos tier to skip some Onslaught floors through [[expeditions]], a minimum [[Champion Score|champion score]] must be met.{| class="wikitable" Stylestyle="text-align:center;"
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! Chaos Level!! Floor Equivalent!! Floor Unlock!! Champion Score
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| Campaign|| 1~2|| 1|| 0
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| Chaos 1|| 3~4|| 3|| 335
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| Chaos 2|| 5~8|| 5|| 580
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| Chaos 3|| 9~11|| 9|| 1,050
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| Chaos 4|| 12~16|| 12|| 1,740
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| Chaos 5|| 17~21|| 17|| 2,750
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| Chaos 6|| 22~27|| 22|| 3,800
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| Chaos 7|| 28~98|| 28|| 5,300
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| Chaos 8|| 99~299|| 99|| 7,850
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| Chaos 9|| 300~699|| 300|| 9,850
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| Chaos 10|| 700~999|| N/A|| 12,750
|}