for those who need advice or would like to share their strategy with others

i've got a good strategy:

if you want get through the dungeon without too much difficulty, you should go alone as eithier mew or kecleon. i did it with mew.
bring a pokemon with surf if you're going to wish cave so you have plenty of space for the following items

2 or more link boxes
4 frustrations
at least one escape orb just in case because i can't make any guarantees
a pass scarf to hold
2 apples of any size
the rest should be reviver seeds and max elixers

when you enter the dungeon, the first thing you should do is use all four frustrations and either discard them or keep them to be restored when you return if you have a mr. mime with recycle
then go along, use items as needed, until you can't defaet the wild pokemon with just one frustration. then use a link box to link the moves in pairs, then continue. if you want, although i wouldn't recommend it, link all four when two isn't suffiecient anymore. i would save that for jirachi if you're in wish cave, i used it twice and easily defeated jirachi.

if you're going to purity forest, then you're on your own with this one

My best strategy is going alone as an absol. I don't have a particular strategy with absol, I just chose it because I took a personality test and it said I am absol. I go alone because I know I can handle things alone and having partners only brings me down...

Alright I have a Thyphloision, Swampert and Meganium as team with wich I play
I'm searching for a solid tactic to beat both Purity Forest as well as Wish Cave
To drakonezduskmoon:
If you want to use 4 Frustrations where did you find the frustration TM
Thanx to any1 who wants to help