LogFAQs > #969037822

Who was the B8er that killed Papyrus their first playthrough because they thought he was playing a trick on them? I always thought that was Pun, since that seems like a very Pun thing to do.

VintageGin posted...

The "gotcha" moment with Flowey if you reload the game after killing Toriel is one of the most memorable parts. The game definitely sets you up for it, but it caught me totally off-guard when he called me out for reloading.

yeah, it's all the little details that make Undertale so great. Back when it came out, I probably played through it 4-5 times just to see how the dialogue changes with certain characters alive or dead. The critical path through the game is short enough that you can get through it fairly quickly.
Honestly I think the best way to experience Undertale is to treat it as a regular RPG your first time through. Maybe kill some things, maybe grind some LV. Makes the Sans judgement at the end more meaningful, then you can see all the little changes on a replay. But so many people always seem to gravitate towards full pacifist their first time through, either because they already know about the game from its reputation or because they're metagaming. If I was toby, I probably would have gotten rid of the Froggit in the Ruins that implores you to SPARE enemies. Make it seem like an optional way to end battles rather than something the game wants you to always do.