[silentsea90]

Pardon me if my question is dumb, but why did OP share this methodology? Could he not have continued with this for the rest of the keys once they are accessible? Don't you need all of the keys to get a million dollars, or am I missing something?

[jakob223]

The later keys are expected to be harder, so if someone is able to get 400 of them total, it would be very surprising if they were stuck on one of these first three.