What does this mean.

1. Dtxmn, didn't you see the hint before that cipher? 2. Use your Stopwatch. 3. If you still can't figure out, just try and go get the boots.

Well I have the boots so it really doesnt matter anymore.

Basically, it tells you to turn 3D on so you can see what blocks are solid. This isn't really necessary since their textures are slightly different, but it helps.

The most clichéd thing to say on this community: “Key?” (But no, seriously, what’s the key?)

The most cliched response: "Dig deeper in this community, cadet!" (Look into my Play Journal and flip through the comments)