Not sure what best control for First Person Dungeon Crawler for turn based grid games?!
I have some ideas:
1) First (WASD)
*W,S,Q,E - move (^v<>)
*A,D - turn head (90 degrees)
*F/Enter - use / talk (interactive/NPC)
*R/Space - wait one step
*Tab/Escape - menu
*1,2,3,4... - quick skills / items (hot keys)

2) Second (Up, Down, Left, Right)
*Keyboad Up,Down - move forward & backward
*Keyboard Left,Right - turn head (90 degrees)
*Shift + (Left,Right) - move Left/Right
*Z/Enter - use  / talk (interactive/NPC)
*X/Tab/Escape - menu
*R/C/Space - wait one step
*A,S  -  turn head (90 degrees)
*Q,W,E,R... - quick skills / items (hot keys)

3) Casual (like Bitsy 3D without any menu)
*Keyboad Up,Down - move forward & backward
*Keyboard Left,Right - turn head (90 degrees)
*Space - wait
Attack, Talk or Interactive - automatic using by collision
No Menu and no Inventory

PS I wanna make the game like "Orcs n Elves" (NDS)

The most optimal solution is of course to let the players customize the controls to their likings. However that is a time consuming thing to implement and perhaps a bit much for a jam game.

I recommend using the following keys as default:

• WASD = Move, QE = Turn
• Arrows Up/Down = Move, Arrows Left/Right = Turn , Delete/Page Down = Strafe
• Numpad 4568 = Move, 79 = Turn

This way you cater for both left and right handed players. I am left handed and always prefer to use Numpad to control games.

Z