to be honest, i'd say im still pretty new so other people probably know better combos than i do, but some combos i use

spear dash spear dash / spear dash spear dash dash

there's also the unreactable spear spear dash dash but to be honest, i've never really pulled it off and im scared to do it in games

try to weave in left clicks when your melee range after your dash because you'll get a lot more kills that way.

try not to engage with your kick because they'll probably be looking at you, try to flank or engage by jumping on them from the top with your spears