This is my fox skills:
Master Stone Strike
Master Six Sense
Master Shruken Master
Master Lucky Seven
Lvl 1 Armor Destructor
Invinsible drilling (only get it if u like to drill alot)
Lvl 1 Item Detection (get it if u drill at high depth and u dont want to keep seeing no item is here)
Master Aura of Luck
And u should get Land Mine after that. :P
Heavy Carrier should be learn only and only if u want to learn pouch of pain. get it b4 pouch of pain.
Compound Master. Dont get it. it seems it
doesn't improve ur compounding.
If u PVP/GVG get Sticky Foot. Decrease enemy's HV so ur SS can land. SS misses quite alot if ur AC is low.