How do I rotate the player's character?

When I tried to rotate the players character, it just kills the player.

script.Parent.Touched:Connect(function(hit)
for i,v in pairs(hit:GetChildren()) do
if v:IsA("Humanoid") or v:IsA("CharacterMesh") or v:IsA("Accessory") then
else
v.Orientation = Vector3.new(0, -90, 0)
end
end)

script.Parent.Touched:Connect(function(hit)
	if hit.Parent:FindFirstChild("Humanoid") then
	hit.Parent:SetPrimaryPartCFrame(hit.Parent:GetPrimaryPartCFrame()*CFrame.Angles(0,math.rad(10),0))
	end
end)

The outcome you are getting (player dies) is because you are rotating all the parts individually which breaks their joints. You would need to rotate them all relative to one part.

script.Parent.Touched:connect(function(hit)
local h = hit.Parent:FindFirstChild('Humanoid')
if h then
h.Parent:SetPrimaryPartCFrame(h.Parent.PrimaryPart.CFrame*CFrame.Angles(0,math.rad(-90),0))
end
end)

This should work. If it does not, research the SetPrimaryPartCFrame() function. Do not rely on SetPrimaryPartCFrame() in the future as it slowly will distort the model you are positioning.