It's all written down in the rules.
You need 30 activity points (max 14 points for 14 days) and 1 Merit point.
In addition to activity, everyone now has a merit score, and you need both a certain activity level and a certain merit score in order to reach higher member ranks. The required scores are:
| Rank | Required activity | Required merit |
| Brand new | 0 | 0 |
| Newbie | 1 | 0 |
| Jr Member | 30 | 1 |
| Member | 60 | 10 |
| Full Member | 120 | 100 |
| Sr. Member | 240 | 250 |
| Hero Member | 480 | 500 |
| Legendary | Random in the range 775-1030 | 1000 |