>>150831854 (OP)
Its hard to gauge because shes always fighting alongside her friends. And when normal people can fight vampires and kill them with a pencil, it's a little hard to take them seriously as a threat.
Also it's all schlocky 90s/early 00s special effects so there were a ton of budget constraints on what she could do and fight
But she was able to swing a Troll God's hammer easily with one hand and Spike had trouble even lifting it
Also that time she fought the Frankenstein by punching directly into his chest and ripping out his nuclear core. She was being boosted by Giles's knowledge and Willow's magic but it was still her body and strength