Normal enemy - normal stats
Elite - damage is high, health is decent increase, Has skull on health bar. (blue eyes) Will replace normal enemy of same type.
Boss, Like above, minus blue eyes. Are sitting in one spot. (relic hunters added in nameless city, “adventures” “raiders” You find skeletons enemies label with bar. Some of them have smedges of more health, or alot.
Relic Item Boss, (or story boss if you want) Tyros Deathbringer, Witch Queen etc.
World Boss, Damage is high or just insane, and health pool is way hell up there. Almost all of them drops keys.
Thou, there several added to Nameless City, that dont drop keys, but drop shards of power.
As for elites.
Shellback, larger, darker color.
Croc, Larger, seem be no color change.
Hyena, they come in 2 color tones. But they’ll be about 1.5 size of normal hyena.
Wolves, about 1.5 size.
White wolf, slight size difference, Very hard to see blue eyes, But when you get hit, you’ll know. XD
Small and large Dragons have Boss tag, and have blue/red eyes naturally. And it changes depending on angle.
Birds. (ones in jungle) grey tone, and about x2 size.
Snakes (big ones) blues eyes, hard tell size change.
Most of other enemies, I havnt seen blue eye, or only one. Didnt get a good size comparison on them to really comment.