okay so here's my idea chat:phase 1A:

it's like classic last breath but sans has a GUN (no bullets cry about it we arent in sudden changes)

so he just slices you with it

also maybe flowey will help him and then DIE before phase 2 because it would be weird having him or somehthing maybe

PHASE 1B

in the overworld sectgion you explore the CORE

and you find cooling machine

break it

then go to snas

sans realize you just doomed the CORE

so he fight you

and its like i miss you but bad

anyways long story short either the core explodes or you push sans off with the pan or smrh4jhger

uh phase 2

sans still has his hat cus he looks good

and he has da bone (the gun fell)

ok so its phase 2

but if it were good

also sans drinks ketchup to revive

you may think i stole this from renewed

but

i made this

like

2 years agio

please believe me man cmon

ok

phase 2.....5

so basically

yo break sans's bone which he was blocking with

and he don't like that

so he pulls out the gun

so sans just attackz

and then

you repair fight

and sans starts block with gun

but tired

thats phase 2.75

ok then you kill him

but

he has

plot armoour

so he injects with determination himself

and then it's like nexroptosis and

unlike

og last bread

he

actually

lets you have your turn

but he uses his plot armour too fast

and then after basically ruining the core

he fucking dies because skill issue and determinatiom melt him

womp womp

ok thats my story end bybye