DRAGON AGE : ORIGINS

EASY LEVEL UP GLITCH

In Ostagar, near the beginning of the game, in the mission Tainted Blood, you need to collect three vials of Darkspawn Blood and three Treaties for Duncan. Go on the mission and collect the vials of blood, but do not collect the Treaties yet. Instead go back to camp and return to see Duncan. Talk to him and choose the option : "We have the blood, but not the scrolls" Exit the conversation and you will gain XP. Just go back and forth talking to Duncan and exiting and you can easliy level up. Push X to skip the conversation if you want it to go faster. 

Money cheats below won't exactly unlock achievements, but they do make the game a lot easier to unlock achievements. 

EASY MONEY GLITCH

You will need an item worth more than 3g to make any real profit. If you have Blood Dragon Armour or Collectors Edition you can sell those as you cannot lose the item.

Credit goes to oiLLuSi0NZzo for the video.

REDCLIFFE TAVERN INFINITE MONEY GLITCH

Another glitch but at the Redcliffe Tavern. You will need to download the Stone Prisoner DLC (free if there is a redeem code card inside your copy) for this to work. Warning : Harsh language used!

Credit goes to Rooster Teeth for the video.