Spoilers from the Next Phases:

New Mechanics: Zombie Walk, Peashooter Shoot, Cactus Shoot, CornPult Shoot and CabbagePult shoot! Edit: i'm sorry if the animations were bad, i can do too much using Scratch, don't judge me

Phase 1

New Shooting Mecanics: Fire Peashooter, Duo Peashooter (with Biohazard Mask Outfit), Ice Peashooter, Old Peashooter

Scratch Cat Corrupted (fnf)

New Plants! Coconut Cannon, Cactus and Red Stinger! Next Update: Outfits for Peashooter

New Sprite: Tinky Winky

New Sprite: Po (hanged)

Here's the video of the First Phase: The mechanic is simple, you need to wait the dialogue finish, touch the sunflowers to save them and press T to suck the gas with your Gas Sucker (this name is a trash), then the phase ends lol

New sprites omg, Walten (After the events of the campaign of Slendytubbies 3) and Dipsy (headless)