What level/map/stage did it stop working on? Once you hit level 50 you pretty much become a GOD. But i had no problems with the 1st 2 bosses.
I played on Legend difficulty with the Warrior and as soon as i step on the red circle before the first Boss the Cheats doesn't work anymore. Also i did not try the fast XP Cheat cause three Achievements are linked to leveling up and a Level 50 Chievo at the Beginning doesnt look so legit. Anyway, long story short...with inf. Items you're also god-like.
I love this game! Its great fun so i played the whole game on difficuly Legend and it was amazing with this trainer! But when i tried to play on deity... Holy Crap, thats hard and the infinite Health is not working. With the infinite Potions its tough but doable. Maybe you can fix the Healh Tainer?