Dying Light

There is a relatively easy way to earn the Agile (LVL 10 Agility Profession) achievement fairly early in the game. This method requires the “Voltage” Side Mission which is obtained after the second or third story mission.

Voltage has Crane traveling Haran to reset three power substations in order to restore power to a section of the city. The third, and final, substation is where a bit of grinding will occur in order to earn some easy Agility and Survivor XP.

What you’ll want to do is begin a day cycle and activate the first two substations. Travel to the third substation and make your way to the structure in the middle of the fences. This location is safe from the zombies outside as it’s a “Safe House”, but will only actually become a Safe House upon completion of Voltage. The mission cannot be completed until night time because Volatile converge on the substation and the point is to kill them by turning the power on.

So, you must play the waiting game here until night time. To the left of the buildings entrance is a stack of wood. You are going to jump onto that and hold down the button to then climb onto the roof in one motion. Each time you will earn +15 and then +22 XP. There’s a way to get an additional +14, but it was very sporadic and involved just jumping more towards the wood and jumping up from the wood. Either way, that’s +37 XP per jump and climb. Do this until night time, but DO NOT COMPLETE VOLTAGE. Once night arrives, the game categorizes you as being outside amongst the enemies and Volatile. You will now begin accruing the double XP for 74 XP per jump. You’re also gaining the Survivor XP for being outside at night.
Whenever you tire of grinding, go inside at night and activate the substation and sleep in the bedroll to claim the Survivor XP.

This is a great, and safe way to earn XP early into the game.