here is the rough draft of the first set of biome bosses so far. made some changes and may tweak again down the line. Mr Boe and Ms Stripper included to show size scale. from left to right:
forest biome - freak radiated stag (skinwalker?). charges at you and attacks with antlers.
desert biome - radiated stone elemental. showers boulders with instant knockdown.
snow biome - radiated snowman (should i add a santa hat?). casts a flurry of snowballs that freeze you stiff
burnt biome - radiated fire elemental. sends a barrage of fireballs that bursts into more flames and smoke upon impact.
wasteland biome - radiated metal-infused rocket demo. sends lots and lots of rockets your way..
final game boss: not sure yet...
all biome bosses will have that radiated aura which allows players to easily spot them and keep a distance... which is good, since the radiation will inflict damage if players get too close. ranged weapons are also extremely nurfed against them, which force players into challenging hand-to-hand, or must craft or use the special gear/consumables only obtainable from defeating the easier biome bosses.
the 2nd set of biome bosses will compliment each of these five. i'm thinking about focusing on more flying type enemies..