looks like i`ve had a lot of fun with cheat engine. this is the fourty nineth room of the endless area
If you have cheat engine on the device then start by changing from 4 bytes to double. Then find the ammo type you want infinite of. For example you have 20 shells. Type in 20 in the search box of cheat engine. Use a weapon which uses shell ammo. It does not matter how much ammo it uses as long it uses shells. So let's say your weapon uses 3 bullets per shot. Now that the value has changed from 20 to 17 type in 17 instead of 20 and press next scan. The result it shows will range from 1 to 4 results (may be more I'm not sure). If there is one result, right click on it and click on change value of selected address. Change it whichever value you want. It can even be over the max capacity. In case there is more than one value it's the same steps. Select all of the values and change the values to whatever you want. If you need any help with hacking this game feel free to ask me.