Board Thread:General Discussion/@comment-4504826-20160419213858/@comment-39394247-20190617060451

Sans:

Attacks are the same as in normal mode. However, KR does 3 times as much damage, so getting hit by a gaster blaster beam for 1 frame does 40 damage.

When the "get dunked on" part has been passed, the Undyne amalgamate appears.

Check data:

Sans: 120 ATK 1 DEF

The easiest enemy.

Undyne: 4995 ATK 9999 DEF

Not the hardest enemy either.

Undyne's attacks kill you instantly, and are like Undying's from before. Once you have killed Sans, though, you can flee to end the battle.