Launch the game then the trainer. If some function does not turn on, press [Delete] (this is like a reset) and then turn it on. Teleport carefully, otherwise you will fall out into space.

The infinite ammo feature works like this: pick up the ammo and a full stack of these ammo appears in your inventory. And their number does not decrease when the weapon is reloaded.

If when you try to completely freeze [Shift+F10] the game crashes, then use freezing by coordinates. It is safer for game scripts.

Be careful with completely disabling the appearance of necromorphs! Sometimes they must appear according to the script, otherwise the game's plot will not advance.