alki - crypt
alma - unamed
alge - ancient city
altz - pirate cove

zoki - logging camp
zoma - mysterious forest
zoge - platform
zotz - excavation

kima - lower deck
kige - minecart junction
kitz - kitz dungeon

mage - board
matz - poisonpool

getz - overworld




each key is made up of 2 parts, in total there are 6 parts you can gain from hacking enemys
al
zo
ki
ma
ge
tz

as for where the best area to harvest key parts, dungeon 2 forest is pretty good
the slimes and plants are easy to harvest, note you dont really need to gather them till you can use the data forge.

strategy - have your main charecter use datahack and the rest should attack every 1st round, which should leave the enemy low enough for data hack to work.

this was done using a scout/rouge which hits it before data hack is used, if data hack happens before enemy is hit it wont work.