When i say overall im talking about crush any creature from plains to swamp easily
Because there are some tanky or special one with resistance like golems ( getting well damage from blunts only ) and loxs ( getting well damage from pierce only )
Seeing every silver-bm tier weapon looks like the porcupine goes well in this : with their 50 blunt damage and 63 pierce damage can wreck any monster : everything in swamps and mountain can fall with just the blunt damage , here the pierce damage gives good help
And everything in plains can fall with both type of damage , lox gets good damage from pierce type but very little from blunt

I was thinking about silver and blackmetal swords but golems and loxs gets little damage from both

And maybe best transition weapons are :
Iron mace for swamp to mountain
Silver sword or frostner for mountain to plains ( frostner have much knockback making annoying to make combos but helps in every biome less against loxs )
To fight bosses :
Bonemass - iron mace ; very weak against pure blunt damage
Moder - draugr bow with obsidian or needle arrows ( duh )
Yagluth - silver sword or crystal battleaxe : he takes normal damage from slash and the spirit burning damage make his regeneration not a problem