The borked and inconsistent game mechanics in this game. Phantom hits/blocks, animation skipping, teleporting, ghost range, early hitting, freezing, ninja horses, lag, glaive swing speed, curved weapons and delayed hits.
Apart from that there is also backpedalling kickslashers, kicks in general, random headshots almost killing you, the time it takes to execute a stab on an incoming horseman, even when he is still miles away he always bumps you before you can stab, random spammers, the teamhits, fighting on slopes and circle maps.