X-Blades
37 Achievements
1000
6-8h
Xbox 360
Master of all skills
Get maximum Shooting, Melee and Airstrike upgrade level
50
How to unlock the Master of all skills achievement in X-Blades - Definitive Guide
Munsie
You will need to get level 3 shooting, melee and aerial upgrades. This requires 9 of each artifact type, luckily there are 10 or 11 of each so you can miss a few. Most of them aren't hidden very well, so take your time and these achievements should be yours. If you happen to miss an artifact in a level, simply find the door to return to the previously level and continue your search. For a location of all artifact locations, see this thread.
SetsunaFSeiei
For all Artifact locations, look at this thread.