GW2 Bachelor of Secrets Achievement can be completed in Zone 2, after finding 6 Hidden rooms. A mini bomb can be purchased before the second check point. A light can be found after the third check point.
Bachelor of Secrets Hidden Room no. 1
Next to the Waterfalls, use a mini bomb and jump down.
Bachelor of Secrets Hidden Room no. 2
Before you reach the second check point, you will find a Super Shop to the left from the second check point.
Bachelor of Secrets Hidden Room no. 3
After the second check point, enter the Super Shop.
Bachelor of Secrets Hidden Room no. 4
After the second check point, next to the Super Shop use a mini bomb and you will find the third Hidden Room.
Bachelor of Secrets Hidden Room no. 5
After the third check point, jump down. On the wall to the right you will find the Super Shop.
Bachelor of Secrets Hidden Room no. 6
After the third check point, jump on the water lilies and proceed further, until you find a hole in the ground with some branches. Jump down on the branches.
