God Mode

When in the game lobby, press the Y button to go to the Oaths screen. Press A on one of the oaths (I used the second one entitled Sword). Make sure it says Activated and then press B to go back to the lobby screen. Now all you have to do is complete any map on any difficulty with that oath activated and you should get the achievement. However, for some people including myself, the achievement has been reported to be somewhat buggy/glitchy. Luckily, there's a workaround so if the achievement didn't unlock for you, follow the steps below:

I finally was able to unlock the achievement using a popular USB method used in other games such as Wits & Wagers or Defenders of Ardania to unlock buggy achievements. Here's what you do if the Nothing Safe achievement doesn't pop normally:

NOTE: Just be warned that while this method will fix the buggy achievement, you WILL lose your progress/stats and will have to start anew.

1. First you have to move your profile to a USB stick. Boot up your Xbox and make sure you are not signed in to any account. Go into Settings > System Settings > Storage > Storage Devices > Hard Drive > Profiles. From here, you will need to move your gamertag profile onto a USB stick (not sure if memory card works).

2. Sign into Xbox Live with your account.

3. Click on God Mode in your games library so it starts up.

4. This is the important part and it may be timing based so try and be quick. When you first boot it up you will see a black screen followed by the ESRB rating screen. Don't do anything yet but as soon as the Atlus screen pops up, pull your USB stick out of your console. You will see a notification informing you to put it back in but DONT. Also, do not freak out because while its unplugged, it should show no achievements, 0 gamerscore, and no gamerpic on your profile. This is normal for this method and don't worry, it will be back.

5. With the USB stick STILL unplugged, press start so you get to the main menu.

6. Once at the main menu, you can now re-insert the USB stick. Also, at this time, you should notice your gamerscore, achievements, and gamerpic showing as normal again.

7. Have a friend host a game and invite you (hosting might work as well but replicate the way I did it just to be sure). Also make sure at least one oath is activated.

8. Make sure you choose only one oath and go for that achievement before going for the 3 oath / 6 oath achs (or any other buggy ones). The reason for this is that this method is known to usually only unlock one achievement at a time. To get others you would have to repeat these steps.

9. Once you beat the level, the achievement should finally unlock! If not, it may have something to do with the timing of when you pull the USB stick out so try different variations. Good luck and feel free to contact me if you have any questions or comments regarding this issue.

Note: There have been some reports of oath-related achievements being glitchy/buggy.

For this achievement choose Quick/Create match and press Y to enter the Oath selections. Here you'll want choose 1 of the 7 Oaths. Each grants you a set percentage of XP & Gold match bonus upon completing a map, however they also act as a de-buff and weaken your character to some degree. You can select any number of Oaths to equip, yet the de-buff effects will stack as a result.

Serpent- Less effective health pickups: +10% XP/+15% Gold
Sword- Less effective ammo pickups: +8% XP/+10 Gold
Hound- Player takes more damage: +20% XP/+25% Gold
Spider- Player deals less damage: +20% XP/+25% Gold
Thief- Player has no armor: +30% XP/+30% Gold
Warrior- Permanent ability cooldown: +20% XP/+20% Gold
Scorpion: Enemy attacks cause poison damage: +25% XP/+25% Gold

Upon completing a map and finishing the treasure room bonus you'll pop this 20G achievement!

PS: Either finishing a map with 3 equipped Oaths on any map/difficulty, or with 6 on the hardest difficulty will net you 1 or both of the following achievements.