constantly check the walls for blocks that can be clicked on, you will find useful items as you travel.
This is 65% of why I would like to strafe. Looking for hidden switches and wall compartments when you cannot strafe is a serious task. TURN, LOOK FOR SECRET, TURN BACK, FORWARD, TURN, LOOK FOR SECRET, rinse, repeat. It's kind of an unnecessary pain. If you could strafe, it would be like... STRAFE, LOOK, STRAFE, LOOK.
Also, not being able to strafe from behind a corner to attack enemies is annoying. Enemies waiting around corners get the jump on you even if they see you. battle generally goes like this: SEE ENEMY, TURN LEFT, WALK FORWARD, GET HIT IMMEDIATELY FROM THE RIGHT SIDE, TURN RIGHT, GET HIT AGAIN, THEN ATTACK THEM once you are fully facing them again right in front of them.
I suppose this is supposed to make up for the fact that enemies cannot walk through doors or move more than 10 paces in any direction?