find out the name of the game engine the game runs on , find out if some setting can be changed to make / force the game to run in direct x 9 mode then do what it says , start the hack , then run the game ( in d3d9 mode ).
if that fails
start cheat engine .
start game
attach cheat engine
find a player
when you see him on screen search for 1
make it so that you cant see him and search for 0
repeat until there is 1 or 2 values
breakpoint on access
whatever reads it there will most likely be a jne under it
nop it
wallhack made.
this method works on most games but be carefull if there is an anti cheat , it will flag the code change and kick you.