Looks good I like the shape of the top and the beat up look, definitely comes off as a brittle stone sword kind of vibe. I would say you could probably work a bit on the handle, something super simple like lowering the subdivisions on the icosphere to 1 might make it match the super low poly feel a bit more.
I did a quick draft and this is what an icosphere with a bit less detail looks like, I personally really like how it looks with the rest of your sword style
As well for the blade chips, all I’m doing is selecting a vert, beveling it (ctrl+b) and pressing v (so it bevels from a single vert). Once I’ve created a bevel/crack, I sometimes select the face and resize it in a certain direction; so in this case, I selected the crack face and resized it up (s, z, pull mouse down). I will say though, I thought your blade cracks were cool/gave off a really cool stone sword vibe
how is that a sword though? you have minor modelling mistakes in the blade
like that. the cuts are too big or dont look like notches/cuts, the blade is too broad and thick, the handle isn’t great. and yeah