Hal rooms are rooms hidden within the game by Hal. Labrotory
The first one is much harder to find, as you have to go as far as right as possible on 1-4, then back-track to find a section of ground has lowered.
This HAL Room is amazing for granting access to four superb abilities VERY early into the game.
The other room is found on 6-5 and isn't as well hidden, but still pretty easy to miss if you don't bother to explore that cranny. Where the little magolor like things fall go in that tight area go to the right enter a door which is kind of in the background
Added by: pwnage123 Apr 22nd 2012, ID#5087