Exploit#1 for Project-JoJo on roblox.com + This was slightly rushed.

2295122555_Project-JoJo_Exploit(1).lua

-- // slua (https://x.synapse.to)
print('slua https://x.syanpse.to', 'Project JoJo No Movement Exploit')

loadfile('Player.lua')()
local misc = game:GetService("ReplicatedStorage").Logic.misc -- // COUGH COUGH BACKDOOR COUGH COUGH

local function connect(player) -- // This works barely that much, but this is pretty much reference onto what can be exploited, so that's what matters, you can even set everyone's speed to 59 since that's the limit, else it won't be accepted
	if player ~= Player then
		local function fire(chr)
			local function f()
				spawn(function()
					local h = chr:WaitForChild('Humanoid')
					misc:FireServer(5, h, 0) -- // walkspeed, humanoid, value
					misc:FireServer(7, h, 0) -- // jumppower, humanoid, value
				end)
			end
			f()
			spawn(function()
				chr:WaitForChild('Humanoid').Changed:Connect(function(p)
					if chr:FindFirstChild('Humanoid') then
						if chr.Humanoid.WalkSpeed > 0 or chr.Humanoid.JumpPower > 0 then -- // tried to optimize it
							f()
						end
					end
				end)
			end)
		end
		player.CharacterAdded:Connect(function(chr)
			fire(chr)
		end)
		if player.Character then
			fire(player.Character)
		end
	end
end
for _, player in next, game:GetService('Players'):GetPlayers() do
	connect(player)
end
game:GetService('Players').PlayerAdded:Connect(function(player)
	connect(player)
end)