Serious Sam HD: The Second Encounter Message Board  

Easiest way to get unlimited ammo without cheats is to play a co-op game and turn on the unlimited ammo option under the game settings. You can also set it to have infinite lives and 10 seconds of invulnerability after you die.

I know it kinda sucks to have to play co-op just to access these options but at least they work. And you can play co-op by yourself if you want.

damn this sucks...dammit developers. It's just singleplayer trainer..

The trainer doesn't work for me.
I need the trainer to do some achievements but
it doesn't work.
Like it says cheats activated when I press F1 but
there is no effect when i try to activate them.

Game crashes for me as soon as I attempt to load a game. I can activate the trainer on the main menu, just not play with the trainer running.

People pay money for these "cheats". If the cheats don't work, people will stop paying for them. Simple as that.

except that this trainer is from 2010, is 5 years old, was retired, was created by Anonymous, and was posted here for free..

but yeah, other than that, you are correct

best,
Cal