Jacob appears to be using a kendo style of sword fighting, most likely okuri-ashi. This style of fighting is meant for short or enclosed distances. The way Jacob uses his sword is purely a stylistic choice.
Despite having a relatively strong and name recognized cast, no streaming or online rental options have been made available for this film. It can be assumed someone has used legal recourse to bury this film. Let's just say it's Brad Dourif.
The word necromancer is pronounced ne-cro-man-ser, not ne-craw-man-ser.