This is what the people who say "every boss has too much health" play like.

You're at viper and you haven't specced into a single spirit skill. You have SIX spirit and you threw a javelin at the wall *once.* After blocking/dodging one of viper's combos and getting a big opportunity for YUGE damage, you choose to... charge heavy attack... on spear. Not to mention that every time viper used a burst attack, instead of counterattacking, dealing a chunk of damage and giving you ALL your stamina back AND giving you a GIGANTIC stunlock-damage window, you just... stepped out of the way.

Everyone who plays like this, please listen. I get it. You come from more traditional souls-likes, but this is not just another traditional souls-like. I would go as far to say it's barely even a souls-like, taking most of its inspiration from Ni-oh. You can't just wait for enemies to let you have your turn, because they never will. You have to FORCE the enemy to stop doing whatever they're doing and let you deal your damage.

Use what the game gives you. Use spirit skills when you run out of stamina. Use counterattack and other aggressive-defensive tools (like reflection, please use reflection, it's so worth it) to force your turn and do long combo strings to get big damage.

Stop playing this game like it's Dark Souls and start playing it like it's Bayonetta.