Best way to hack the game.dll is to use PE Explorer program.
Do a search for the values u found in the weapon.txt like PL_HP etc and change them.
I made afew mods using this method, If some1 wants a sample u can PM me or Z (Dev section only).
So First we open up PE Explorer and point it to the game.dll -
Now we want to use the dissembler -
We click START (There are some options that u can change depending on what your hacking needs are)
Now we search for what we wanna change:
Like so - Once u find something -double click the address line for the full machine code line.