Warhammer: Chaosbane

This can be done on easy difficulty

Does this achievement(and the side quest achievement) have to be done with the same character?

Wanted to give an update after unlocking this achievement. There are two types of Relic Hunt available when you go to the Collectors Guild – Standard and Upgraded (which requires you to use a green gem from Tower of Chaos Missions).

If you are trying to go through this quickly, go for the above method - a Standard Mission, and do not equip anything which increases your Discovery Potential. It costs coins and you are running through the enemies not killing.

It took me 5-10 mins using this method running through as Elessa the Wood Elf Waywatcher, Difficulty: Chaos 4 on the Invasion of Nurgle. Her basic ability to roll away should get you through the enemies quickly, allow you to kill the main boss, unlock 1 Relic chest, exit and start-over.

However, Upgraded Relic Hunts was the way I did most of these Relic Hunts.

Some of it was down to circumstance (that I had two friends playing with me, so we did a lot of Tower of Chaos Missions and then Upgraded Relic Hunts). For the most part, it was down to the rewards of unlocking 3 Relic chests and a higher chance to get Green Equipment for my character.

You still have go go through the mission quickly, but in this scenario you have to kill constantly to unlock 3 keys. Not sure the best way to describe it but you have to keep the multiplier high by constantly killing enemies for your progress bar increases (the max being x50).

The settings I used was:

Invasion of Nurgle
Upgraded Relic Hunt
Demonic portals regularly appear
Poison clouds regularly appear on the ground

If you forget to add Demonic portals, you may find yourself only unlocking 2 keys/chest for 15-20 mins worth of gaming work but, you'll have fund and get better wargear.

Hope this helps