Experience is gained by completing missions and winning fights. It can be lost when the player is killed after a fight. Gaining enough experience will result in a level up, making the player stronger.
From level 21 on, XP needed can be calculated from XP = 11 x Level² - 669.
| Level | XP needed |
|---|---|
| 1 | 0 |
| 2 | 9 |
| 3 | 19 |
| 4 | 30 |
| 5 | 45 |
| 6 | 72 |
| 7 | 125 |
| 8 | 195 |
| 9 | 305 |
| 10 | 460 |
| 11 | 670 |
| 12 | 910 |
| 13 | 1,190 |
| 14 | 1,487 |
| 15 | 1,808 |
| 16 | 2,147 |
| 17 | 2,510 |
| 18 | 2,898 |
| 19 | 3,302 |
| 20 | 3,730 |
| 21 | 4,182 |
| 22 | 4,655 |
| 23 | 5,150 |
| 24 | 5,667 |
| 25 | 6,205 |
| 26 | 7,767 |
| 27 | 7,350 |
| 28 | 7,755 |
| 29 | 8,582 |
| 30 | 9,231 |
| 31 | 9,902 |
| 32 | 10,595 |
| 33 | 11,310 |
| 34 | 12,047 |
| 35 | 12,806 |
| 36 | 13,587 |
| 37 | 14,390 |
| 38 | 15,215 |
| 39 | 16,062 |
| 40 | 16,931 |
| 41 | 17,822 |
| 42 | 18,735 |
| 43 | 19,670 |
| 44 | 20,627 |
| 45 | 21,606 |
| 46 | 22,607 |
| 47 | 23,630 |
| 48 | 24,675 |
| 49 | 25,742 |
| 50 | 26,831 |
| 51 | 27,942 |
| 52 | 29,075 |
| 53 | 30,230 |
| 54 | 31,407 |
| 55 | 32,606 |
| 56 | 33,827 |
| 57 | 35,070 |
| 58 | 36,335 |
| 59 | 37,622 |
| 60 | 38,931 |
| 61 | 40,262 |
| 62 | 41,615 |
| 63 | 42,990 |
| 64 | 44,387 |
| 65 | 45,806 |
| 66 | 47,247 |
| 67 | 48,710 |
| 68 | 50,195 |
| 69 | 51,705 |
| 70 | 53,231 |
| 71 | 54,782 |
| 72 | 56,355 |
| 73 | 57,957 |
| 74 | 59,567 |
| 75 | 61,206 |
| 76 | 62,867 |
| 77 | 64,550 |
| 78 | 66,255 |
| 79 | 66,982 |
| 80 | 67,731 |
| 81 | 69,502 |
| 82 | 71,395 |
| 83 | 73,110 |
| 84 | 76,947 |
| 85 | 78,806 |
| 86 | 80,687 |
| 87 | 82,590 |
| 88 | 84,515 |
| 89 | 86,462 |
| 90 | 88,431 |
| 91 | 90,422 |
| 92 | 92,435 |
| 93 | 94,470 |
| 94 | 96,527 |
| 95 | 98,606 |
| 96 | 100,707 |
| 97 | 102,830 |
| 98 | 104,975 |
| 99 | 107,142 |
| 100 | 109,331 |