If I only unlock 2 online achievements with Horizon, will I be okay from a reset or ban?

Horizon - Xbox Xbox Gaming
1

I plan on only using it to unlock 2 online achievements for the 360 version of WWE 2K16. I’m a bit nervous about it since I’ve read about the risks. What I was planning on doing was as follows:
Move my profile to my flash drive
Disconnect from XBL
Mod the 2 achievements I want and save them
Timestamp them for a short time into the future (e.g. set one of them 15 minutes ahead and one 30 minutes ahead)
Put my account back on my Xbox and reconnect to XBL
Go to online gameplay for WWE 2K16 and wait for them to pop

Is this a feasible idea? And would I really need to pay for a Diamond membership just to do this? Thanks

2

No matter what you do, when you add achievements to your account you run the risk of a reset.

3

I wouldn’t mod any on line achievements if I was you.

5

Yes, the achievement unlocker is diamond-only.