@ChillingSky I'm not sure you fully understand what free to play is, but more accurately it's buy to play. But anyway look at LoL a free to play game, you only unlock characters by either buying or playing and gathering IP, same with GW you can buy get gems from gold. Unlike Allods (which is also F2P) you dont have to spend money to have an advantage over other players, and buying optional stuff cannot be compared to subscription based games such as WoW.

Anyway, I completed every part of the event without spending a sent, sure you can buy an MK costume, but that is optional and I had a blast without it.