Could Sans Beat Flowey?
As Sans Fights You He Tries to Break Your Determination Like He Did with Flowey, but Your Determination Is Stronger Than Flowey's. Thus, Sans Has Killed Flowey...
As Sans fights you he tries to break your determination like he did with Flowey, but your determination is stronger than Flowey's. Thus, Sans has killed Flowey many times and because of this Flowey gave up after awhile.
Is Sans aware of Flowey?
When Sans first invites you, he asks if you know about a talking flower. ... Then there is the true pacifist ending, where Alphys realizes that a talking yellow flower is bad news – but Sans doesn't. So, there you are: Sans doesn't know about Flowey, so he assumes you to be responsible for his actions.
Can Flowey be defeated?
As time progresses in the final phase, the protagonist's damage slowly increases, starting at around 185 damage and slowly going up from there. However, it caps at around 1,210 damage. In Debug Mode, this can go as high as 6,000 damage, allowing the protagonist to defeat Flowey in only two hits.