As the updates say, there's a new finishing move for Spearton vs Swordwrath... but I tried to see Spearton's performance but... no, no finishing move, Swordwrath too. I wonder how Spearton kill Swordwrath.

for spearton, i think it is the campaign finisher.i dont know about swordwrath finisher

I saw that, it's awesome for the spearton to impale swordwrath, but why it is not in online?or it is only for gold membership members?

Quote from Bladed Fire

I saw that, it's awesome for the spearton to impale swordwrath, but why it is not in online?or it is only for gold membership members?

Details for signing up for gold membership are:
unlocking the Chaos empire,
1000 e points for signing up,
additional 300 e points every month,
unlocking dual finisher moves.

So yeah