Step 1: Download Cheat Engine here(setup, uncheck installing anything else but CE)[mirror2.cheatengine.org] or here(no setup, might not work if you have old CE)[www.cheatengine.org]
Step 2:Install and launch it
Step 3:Get in Age of Decadence and start a new game, you'll see this

Step 4:Make some character and get to character creation stat/skill allocation and leave all stats at 4


Step 5:Get in Cheat Engine and search for stats

Explanation: click like if u up button pointed at by first arrow, you'll get menu with running processes in which you find AoD.exe and choose it. Then type 4 in field pointed at by third arrow. Next run first scan(4th arrow) and you'll get a lot of addresses among which there are 18 addresses that actually have stat values(which you can change).
Get back in AoD and change all your stats to 6

then go back to Cheat Engine and search for value of 6 by pressing 'next scan' with 6 instead of 4

repeat changing stats/searching between 4 and 6 until you are left with 18 addresses.

Put all stat points in something

then in Cheat Engine select all those addresses you found(CTRL+A) and choose 'add selected addresses to the addresslist'. Then choose all of them in addresslist, press enter and you can change value of all stats - make it 10 for example. Then go back in AoD and learn some skill - this will update GUI and show that you have every stat at 10. Now you can go on with that maxed out character to be able to pass every single stat check and wreck any scrubs in your way.

After you complete the first quest you'll get some general skill points - using cheat engine the same way as with stats you can get yourself all skills at 10. This will take about 3500 skill points(for comparison - if you would complete everything optional at once you would get around 400 skill points and probably around 60-90 combat/civil skill points, standing somewhere near the end of game).

Some tips:
* Strength, dexterity, constitution, perception bonuses scale even above 10(damage bonus, AP, HP + poison resistance, accuracy + attack/defense bonuses from stats), however intelligence or charisma loses its bonus if it goes over 10. EDIT: actually str/dex/con/per also lose scaling above 15
* You can change AP or HP during fights making it possible to do anything and survive anything in a fight.

Console is enabled by default, to open it press `(tilde) key when in game.

Here is list of what you can do with its commands(they're not case sensitive, you can copy them):
dlgChangeStat(stat, number) - changes 'stat' by 'number'(number can be negative), this can modfiy stat in range of 1-15, but don't forget that intelligence/charisma don't scale above 10

stats:
str
dex
con
per
int
cha

dlgaddskillpoints(number) - gives skill points

dlgChangeSkill(skill, number) - changes 'skill' by 'number'(number can be negative), modifies in range of 1-10

skills: use full names, for example 'streetwise', 'dagger', 'critical_strike'

dlgChangeMoney(number) - gives money

dlgChangeRep(reputation, number) - changes 'reputation' by 'number' (number can be negative)
reputation:
bodycount
honor
loyalty
prestige
combat
peacemaker
aurelian
daratan
crassus
assassins
commercium

dlgAddRank(49) - godslayer trait

mind shield trait, both commands must be used
dlgAddRank(51)
aod.pc_mindShield = true

dlgAddItemlist(MDN_WellChamber_01_Full) - gives you 1lb of 'meteor'(best) metal and 2lb of blue steel

dlgAddItem(id, quantity) - adds item with that id in specified quantity
dlgAddItem(1, 1) - adds some empty 'note' item which description contains hint of what number is what
dlgAddItem(1600, 1) - adds a power tube
dlgAddItem(900, 1) - adds eye of thor-agoth
dlgAddItem(2165, 1) - adds glowing jar(for using healing machine)
dlgAddItem(2180, 1) - adds crimson eye(basically demon core, given by house aurelian, needed to enter tower of zamedi)
dlgAddItem(2185, 1) - adds demon core

dlgAddItem(119, 1) - qantari sword(macuahuitl), legitimately obtainable only virtually at the end of game
dlgAddItem(137, 1) - qantari 'club'
dlgAddItem(128, 1) - qantari 'axe'

switchMission("Maadoran_Abyss.mis") - teleports you to maadoran abyss even if you're exiled/whatever else from maadoran

revealMapLocation("ThePass") - lets you travel to harran pass
revealMapLocation("DariusTomb") - lets you travel to darius tomb
normally you can only visit those as part of imperial guard/house aurelian questline, otherwise they're locked out

*Keep in mind that messing with locations, important items and such could probably could probably ♥♥♥♥ up game's script logic

List[pastebin.com] of many items' ids

TO GET CRAFTING MATERIALS ANYWHERE:
dlgAddItem(1400, 1) | bronze ingot (1 = 0.1 lb)
dlgAddItem(1401, 1) | leather
dlgAddItem(1402, 1) | wood
dlgAddItem(1403, 1) | cloth
dlgAddItem(1404, 1) | hardened leather
dlgAddItemList(TSQ_Blacksmith_Chest) | Iron (3.4lb item to melt)
dlgAddItemlist(quest_mg3_antidas_dagger) | Steel (1lb item to melt)
dlgAddItemlist(MDN_WellChamber_01_Full) | Meteor + Blue Steel(1lb+2lb)