Lol wut?Parry is the answer to almost everything in the game (sadly).
Also, the bull is the worst designed boss in any Soulsborn game to date. So incoherent.
Game gets very easy later on too. Not as easy as Souls-games, but compared to the beginning, it becomes a cakewalk.
At the point of the drunkard fight tho you should have all the necessary mechanics down and hes there to make sure youre putting it all to practice. You likely are going to die a few times but he isn't doing anything that you shouldnt have already come up against, the black knights in DS1 served this very purpose at an even earlier point in the game. His attacks are pretty slow as well and only come in waves of 2. If youre unsure how to approach you can block those attacks and then retreat to get posture back until you feel comfortable parrying.The issue is that you die too quickly for the bosses to effectively teach you anything. The dummy at the beggining doesn't really help either.
The bosses have combo attacks, which is fine for learning to parry in succession, the issue is that when you mess up, you take combo hits for more damage, sometime one combo can kill you.
You aren't really given a good chance to sit down and really look at the boss, look at the combos it has because they are too damgerous early in the game. I only know like three of the drunkards attacks after beating him.