shooting diagonal between two comrades - no. Diagonal weapons can do that, like longsword or spear, shooters not.
However i would not object if the Elf shoots from D3 as D4 seems to be half empty. Movement would be sufficient.
Assuming you do that, i move the elf there and remove the spider from the board.
As the spider is dead, the rest of the group has now sufficient time to search - at the end of your turn,Rumseeker wakes up.






















