I found some problems with the SledgeHammer.
Its super OP, I know you guys tried to nerf it with the knock-back and slowing down the player, but I took on (no joke) 10 stalkers at one time.
Because of the knock back, if you have good aim, and fast movement, the stalkers can't touch you.
And you can knock people in the lava, which is hilarious.
I would suggest making it so you can't hit as fast, not be able to move while hitting, or make it really goddam expensive.