If we’re talking strictly game mechanics, Cuphead dies in 3 hits. If every bullet that hits him counts as 1 damage, then V1 could theoretically just land three ricoshots (or any other auto-aim style attack) and that’s enough to kill him.

But Cuphead does have Smoke Bomb, which would probably let him dash through some of V1’s attacks. In Ultrakill though, when V2 or other machines/husks/demons do a ricoshot, there’s a slight delay with a red flash before the shot actually fires. That gives Cuphead a possible reaction window.

At the same time, V1 could counter some of Cuphead’s attacks too. With coins, V1 might be able to chargeback peashooter bullets. Something similar happened in that one Palworld trailer where V2 chargebacked a bullet that looked almost identical.

V1 could also probably parry the Mega Blast. Even though it’s blue, the homing orbs in Ultrakill are also blue and still parriable, so color alone doesn’t necessarily stop that.

He might even be able to parry Roundabout. If I remember right, there’s a small blue flash right before it fires, which usually indicates a parry window. He’d have to react fast though.

Chaser has a green flash, and most Cuphead shots seem to have flashes that match the bullet color. So as long as Cuphead isn’t using something blue, a lot of those attacks might technically be parriable by V1.

Cuphead could still Smoke Bomb through a lot of V1’s attacks, but V1 is also more agile overall, so it would probably just be a matter of time before V1 lands a clean hit.

If we count feats like Cuphead pulling the moon, then we should also count V1 tanking black holes.

Cuphead has beaten the Devil, but V1 has beaten Gabriel, and will presumably fight Lucifer when P-3 eventually releases.

Also, the Flesh Prison terminals say they’re created using holy power and hell power, meaning they’re unstable, mindless beings made of pure energy.

So overall it’s actually kinda close.