It gets Backstab. The wording “”Move”” implies that the character must be able to move from one point to another, it cannot ignore creatures and terrains in its path unless it has Flight.
If Brother Tiven the Battle Monk comes into contact with difficult terrain while moving, that move is subject to the general movement rules and is reduced to S.
If Brother Tiven the Battle Monk comes into contact with difficult terrain while moving, that move is subject to the general movement rules and is reduced to S.