The last stage is where the wheels come off slightly for CV1's otherwise tight twitch/method balance. You're very overmatched, on the bridge and in the tower alike - so for consistent success, it's important to develop a steady route. Fortunately, you're given the resources for exactly that.
First thing: to get decent bridge bat RNG every time, ensure you're holding [up+left] from at least the map screen, or even before. What's critical is that Simon starts hauling ass up the stairs from frame 1.
This'll get you this pattern every time.
I've noticed some slight variances in the remainder, over the years - but by that point, I've grabbed the Stopwatch, so I can improvise around unfortunate snipes or dives.
The tower is a similar process - you're completely overmatched, so hauling ass with a bit of Stopwatch is ideal. I'll just let the replay speak for itself there. Going for 2ALL 1LCs, I'm 95% confident on the bridge, and 100% on the tower.
I used to try going without the Stopwatch, so I'd have more ammo and a Triple Shot for Dracula - but particularly when going for a first clear, I'd recommend reaching him with full HP and a little bump budget.
Also, if you know your subweapon mechanics, you can bag lots of ammo and even Multipliers during the fight itself. Brotip: nailing Phase 1 square in the neck with the Cross, so you're hitting his head and body simultaneously, will rack up XTREEM hits (you'll note a distinct fuzzy noise, if on-target). Hit Quota reached = Multiplier drop from next kill, either his fireballs or the room's candles (which you may want to preserve for this purpose).
(this is a variant of the same principle behind the Mummy Bros and Bone Dragon speedkills - when the Cross is hitting two or more targets simultaneously, it'll accrue hits at blistering per-frame rate)
The infamous CHUB CRUSHER - poor bastard barely made half-mast
As for Holy Water, it disables enemy hitboxes while it's burning them, allowing you to safely pass through. Of little comfort vs phase 1's spectral shade - but do what you will versus hulking brutes seen elsewhere.
If Dracula's first phase RNG scurrs ya,
there's a way to manipulate it courtesy of sharc. I only briefly perused, but it seems solid.
![Smile :smile:](./images/smilies/icon_smile.gif)