correcting this wrong tutorial ...
In the first room on BD, dont press END before enter in the room. Just when you're inside the room, playing.
(Done it, room start in 8min)
Then kill some enemies with different weapons for Increases more mastery in your weapon. Done, exit the room
In the next time when you go to enter in game, before pressing Start. press END and when playing BD Press END
again, repeat process every time, except for the First Room BD.
WTF HotKey "1" ? has no function .
Credits to @
MiguelZinho