I still remember the first time I reached Asgore Dreemurr in Undertale. It was late 2015, and I thought I was ready. I had survived the Underground, made friends, and cried at least twice. Then the game removed my MERCY button, and I panicked. Even in 2026, that moment still feels like one of the boldest design choices in any indie RPG. Asgore is not just a boss; he is a sad king, a grieving father, and a roadblock that forces you to decide what kind of player you really are.

Spoiler alert: this guide talks about the end of Undertale's Neutral and Pacifist routes. If you have not finished the game yet, go play it first. Seriously. The story is worth it.

Getting to the Throne Room Without Losing Your Mind

Before you fight Asgore, you have to walk through New Home. The good news? There are no random encounters. The bad news? The game uses that quiet walk to emotionally destroy you. You learn about Asgore, Toriel, their children, and the first human who fell into the Underground. You also pick up the Heart Locket and Worn Dagger, which are strong equipment for this point in the game.

After the backstory and a quick chat with Sans, you reach the throne room. Asgore is watering flowers. Of course he is. He leads you to the barrier, gives you a final chance to prepare, and then the fight begins.

Stock Up Before You Throw Hands

This is the part I wish I had done better on my first run. Once Asgore offers you a chance to prepare, take the elevator back to New Home entrance and return to the Core. Buy healing items from Burgerpants if you can. His items can fully heal you at LVL 1, which is huge.

Item / Gear	Why It Helps
Burgerpants healing items	Full HP restore at LVL 1
Burnt Pan	Boosts healing item effect by 4 points, but deals less damage
Butterscotch Pie	Lowers Asgore's stats when eaten in front of him
Heart Locket	Strong defensive equipment from New Home
Worn Dagger	Strong weapon from New Home

Asgore Removes MERCY, So You Have to Fight

Asgore starts the fight by destroying the MERCY command. That means you cannot simply spare him at the start. You have to use FIGHT. For Pacifist players, this feels wrong. But it is also brilliant, because Undertale is testing whether you will do what the game demands or what your conscience demands.

Asgore has 80 ATK and 80 DEF, so he hits hard and takes a while to kill. You can lower his stats by selecting Talk in the ACT menu three times. If you still have Toriel's Butterscotch Pie, eat it in front of him to lower his stats even more. It is a small detail that reveals how much Asgore still cares about his family.

Learning Asgore's Fire Patterns

Many of Asgore's attacks look like Toriel's, but they are much faster and meaner. He will not stop when you are low on HP. He can summon:

• Waves of fire that cover half the bullet board.

• Lines of fire that weave back and forth.

• Circles of fire that close in toward the center.

• An orange or blue eye flash followed by a scythe swing in the same color.

For the scythe attack, remember the color rule: orange means move, blue means stay still. You have seen this mechanic before, but Asgore mixes it into a much more intense fight. As his HP drops, his attacks speed up. The only way to stop them is to defeat him first.

The Final Choice

When Asgore's health gets low—around 600 points in the scripted phase—he will endure one last attack and fall to 1 HP. Then he gives a sorrowful speech. He says he does not truly want to hurt anyone. He misses his child. He wishes he could see his family again. But he believes the only way for you to cross the barrier is to take his Soul, so he offers to sacrifice himself.

At this point, you can finally choose to finish him or spare him. If you are going for a Pacifist run, spare him. If you are on a Neutral run, either choice has consequences. Regardless of what you pick, Flowey appears, destroys Asgore's Soul, and crashes the game. That is when the real final boss begins.

My Final Tips for 2026

Undertale is over a decade old now, but Asgore still holds up as a fantastic boss. Here is my quick checklist:

• ✅ Stock up on full-heal items before the barrier.

• ✅ Use Talk three times to lower his ATK and DEF.

• ✅ Eat the Butterscotch Pie if you have it.

• ✅ Stay determined during the fire patterns.

• ✅ Remember orange means move, blue means stay still.

• ✅ Decide whether you are sparing him for Pacifist or finishing him for Neutral.

Asgore is not the hardest boss in Undertale, but he might be the most emotional. He is a king who lost everything and made terrible choices because of grief. Beating him is not just about timing your heals and dodging fire. It is about understanding why he fights at all. And in 2026, that still makes him one of the best bosses in indie gaming.