What was the hardest video game boss for you?

Lies of P - nameless puppet. I choose the other ending on my first run, so my first time facing him was in ng+. Not sure if that made it harder, but yeah, that one was rough

For me it was Psycho mantis from Metal Gear Solid. The reason being that I didn't understood English at the time, so it was literally an impossible boss. I got frustrated with it and abandoned the game, until I found a translated version of it and replayed it and he's actually very easy if you know what you need to do.

For me, it was in Last of Us, >!when you walk through the door and get caught in the rope trap, then have to shoot the zombies upside-down.!<

I had to go through that entire animation over and over and over. It made me hate the game. I played a little bit more after finally making it through, but my heart wasn't in it and I just stopped after a while.

Those lyonel from BOTW and TOTK are some real fuckers

Great Wolf Sif because I can't bring myself to kill a loyal pupper who is trying to save me.

Okay, i'm gonna name one that might raise some eyebrow.

Halflight, Spear of the Church from Dark Souls 3 Ringed City. I know i know, but i can explain. I'm doing a knife only, no summon run, i mainly use Brigand Twindagger for everything, and occasionally Bandit's Knife for anything susceptible to bleed, and it's quite a good run, beating anything with varying difficulty, and even Demon Prince were defeated with a knife, then comes Halflight, Weeb of the Church. Technically it isn't a hard one because it's basically vs an npc invader, but the difficult came from the constantly spawning Guardian that's also do healing and also using a knife, and also the long reaching and parrying weeb sword of Halflight. I couldn't get past this one no matter how much i try, it's the most difficult "easy" fight i've ever did on this run, where the second most difficult one is...Deacon of the Deep.

Saving the VIP on Veteran at the end of Modern Warfare. I spent 4 hours, 4 HOURS trying to save that guy. Not a traditional boss but a boss nontheless

Sword Saint Isshin is not the hardest fromsoft boss. IMO he's not even the hardest boss in Sekiro. But he might just be the boss design GOAT.

Probably Monster Hunter World's Fatalis. That's the only fight I've ever had to genuinely grind for multiple days to beat. It was 100% worth it though, the feeling of bringing him down for the first time was unmatched.

The snake boss in Nioh 2. My friend kept coming back that day to say, "You haven't killed it yet?!"

Probably Malenia, but she's beatable. Definitely had a tougher time learning her than Freide, Gael, Artorias, Manus, Fume Knight, or Ivory King etc.

Growing up I struggled for so long on LittleBigPlanet’s Negativitron boss fight, most recently though I spent days struggling with Uncharted 4’s final boss fight (though somehow I had an easier time on Crushing difficulty on my second play through) and Halo 2’s Prophet Boss Fight.

The Lindwurm in Battle Brothers.

Dry'l in Wonderlands. Not particularly hard but it just took forever.

Hmm. Not sure. Some bosses that immediately came to mind were O&S in Dark Souls 1 and Hume in Eternal Daughter though. I think I had more trouble with the latter, but it's been so long that I'm not sure.

If it counts as a video game, Lich King 25M, not even HC.
I was in a casual guild and not the best player either. Never downed him :(

Mushihimesama Futari's final boss. I felt so proud of myself when I beat it and this is the game that got me into playing Touhou on lunatic mode for fun

Lavos. :(

Second battle with Vergil in DMC 3, Agni & Rudra in DMC 3 and somehow not as hard to beat but incredibly hard to beat well is the Shadow, Griffon & Nightmare battle from DMC5. Beating it on the DMD difficulty gave me that game """PTSD""" where Stage 18 became "that level" to me haha.

The striders towards the end of Half Life 2 episode 2.

Radagon and Elden Beast at rune level 1. The area of effect attacks and the tracking projectiles are brutal. I was able to get a strategy that clobbered Radagon in <1 minute without taking any hits but it required really intense concentration and timing. Not being able to practice just the Beast was the worst part, I hated having to slog through Radagon every single time to attempt it.

Also Sister Friede at level 1 is a strong contender. I don't remember which took me longer to complete.

For me it was Sword Saint Isshin from Sekiro. The ape already took me days to beat, but Isshin was weeks and hundreds of attempts. But it felt so fucking good - especially since it was easy to no-hit Genichiro by the end. God, he must have been pissed off.

MCP from the Intellevision version of Tron.

This asshole made me scream in rage and frustration

Final boss of fury

God Of War 2 Theseus gave me way more trouble than Ares on Titan difficulty.

There might have been a mechanic I was missing but you had barely enough mana to cast all of the required spells to beat it, at least with the pickups I had found, like literally if I missed more than one lightning bolt I had to restart, and some of his spells would instantly kill you. I don't recall the specifics of why it was giving me trouble beyond that but I do remember bashing my head against that wall for hours.

Never really had aa much trouble as that fight. Not in Souls, Bloodbourne, that fucking Theseus and his jerk friend minotaurs.

Ornstein and Smough from Dark Souls. The series have plenty of difficult boss fights but this one is earlier than most and the biggest difficulty spike in the entire game IMHO.

Outside of the Souls games, there's Lil' Hunter from Nuclear Throne. I tried to beat this little trashcan SO many times and succeeded only once. It's insane.

Also shout-out to Hush from the Binding of Isaac for almost giving me a heart attack when I was fighting it as the tainted lost. Never again.

Fume Knight from Dark Souls 2

Inner Agent 3 from Splatoon 2: Octo Expansion

What an absolute nightmare. They play like an online cheater. It's just back to back sub and special weapons. There's almost no room for error. I gave up after like thirty tries because the reward just wasn't worth the stress and frustration.

It's been a long time since I played so my memory may not be totally accurate, but the final boss in fatal frame 2. I rage quit it because it was a one hit kill, and before you get to them, you had to walk down a long hallway avoiding other enemies. It was like 5 minutes of work to get to the final boss only for him to hit you once and you have to start all over. So infuriating. The rest of the game was so much fun.

The guy at the end of Hotline Miami was pretty tough.