Unlock All Achievement/Favor Items
For this to work you must have bought at least one favor item. Open the Game.prefs file with Notepad. This file is located in My DocumentsMy GamesGas Powered GamesDemigod.

Find the text:

Items = {

Copy the following text to it:

Items = {
'AchievementVision',
'AchievementDeathReduction',
'AchievementXPIncome',
'AchievementGoldIncome',
'AchievementRunSpeed',
'AchievementPure',
'AchievementHealth',
'AchievementMana',
'AchievementPotion',
'AchievementTeleport',
'AchievementCooldown',
'AchievementAEMana',
'AchievementMovement',
'AchievementAERegen',
'AchievementManaLeech',
'AchievementSnare',
'AchievementDamage',
'AchievementRefreshCooldowns',
'AchievementFreeSpells',
'AchievementFlurry',
'AchievementFinger',
'AchievementMinionDamage',
'AchievementMinionHealth',
'AchievementMinionEvasion',
'AchievementMinionMeta',
'AchievementMinionBuff',
'AchievementAEHeal',
'AchievementMinionInvis'
},

All items will now be unlocked in the shop.