Grimrock

ok i need help

For this achievment do i have to cast the spells from the same party, or i can make a new full of mages, and do they count all together?
I've been casting spells like crazy and realoding my full mage party and i still can't get it :/

Well the achievment only states "Cast 500 spells". My take is that you have to cast those 500 spells with a party progressing thru the original Grimrock dungeon. You can check how many spells your party has cast on the Statistics page.

YES! Thank you, i forgot about the statistics, it did the trick, you have to do it with one party, no reloading the save

i have everything now

Thank you once more

Yeah, I'm pretty sure that all of the achievements of that sort - landing 250 unarmed hits, opening 10 iron doors, finding 5 skulls, etc. - have to be done within a single playthrough.