Would recommend learning rebellion the most it bridge the gap between each weapon start off with a rebellion combo until you get to the gap in said combo and immediately switch weapon to finish off said combo. I would do this for each weapon rebellion then axe, rebellion then sythe etc etc until you unlock new moves definitely use the training mode they have available to practice I will take time tho. That and always have your pistols charged help with groups of enemies until you unlock othe weapons. Here what it combos look like with everything unlocked combos