Biplane Multikill x 2
Shoot down 2 enemy planes within 4 seconds of one another
（0.93 分）
| 名次 | 名称 | 解锁时间 |
|---|---|---|
| 1 | Dandey | |
| 2 | NeoShockerX | |
| 3 | Niki | |
| 4 | FrickenMoron | |
| 5 | Bieber | |
| 6 | Herr Bu | |
| 7 | PIZZAMASTER_69000 | |
| 8 | chexxum | |
| 9 | tsukasa | |
| 10 | wuddih | |
| 11 | Kentari | |
| 12 | WhiteHawke | |
| 13 | ATOM SMASHER | |
| 14 | sukk1e | |
| 15 | Waffle | |
| 16 | buppy | |
| 17 | rEiGN | |
| 18 | Bananasan | |
| 19 | DrGlass | |
| 20 | EternalKunKun | |
| 21 | Pinilla | |
| 22 | CSX | |
| 23 | Mandango | |
| 24 | Dober | |
| 25 | Zinge | |
| 26 | Joey Gladstone | |
| 27 | Day | |
| 28 | Enduro | |
| 29 | Crazytalk | |
| 30 | Juice | |
| 31 | Kapps | |
| 32 | UselessFodder | |
| 33 | Seadog | |
| 34 | Mort Lupus | |
| 35 | ToToX | |
| 36 | Anominity | |
| 37 | FuzzyWuzzie | |
| 38 | plan9dead | |
| 39 | Norbert | |
| 40 | Caligu1a | |
| 41 | greb | |
| 42 | jxsn | |
| 43 | L44m4 | |
| 44 | Fragile | |
| 45 | Koraktor | |
| 46 | X | |
| 47 | Captain America | |
| 48 | SirBaron | |
| 49 | [iTG] 0z | |
| 50 | Malambis |