Ability:
    Gives player fall damage reduction and short speed buff, 
    hunger refilling or water breathing.
    It depends on the selected modifier, which can be changed with the arrow UP key
    by deafult.

Getting Expedition XP:
    XP gained from running around.


Fall damage multiplier per level

0.95 at level 10
0.9 at level 20
0.85 at level 30
0.8 at level 40
0.7 at level 50
0.6 at level 60
0.5 at level 70
0.4 at level 80
0.3 at level 90
