This is F2P server, baby)
To get more exp you have to buy Destiny pack with 200% Exp rune. In addition you can boost with:
Vitality maintaining potion (1 hour) - +100% exp
Vitality erupting potion (1 hour) - +100% exp
XP buff 50% (1 hour) - +50% exp
Freya Vital rune (30 min) - +50% with vitality
Emperor Rune (2 hours) - +30% exp