街机版的《联合大作战》有哪些隐藏要素？

街机游戏攻略

今天想起来找到投入n个游戏币，也没有通关，貌似有地方有隐藏要素。 我先提供一点：在有个雕像的奈淦髫，使劲打雕像可以打出来大鹰的标志，以后即使死人也是满火力了。今天无意中发现的。 从mamehistory中抄来的： Double Bonus : When the big flying ship comes (the one in 4 pieces) that gives you one bonus for each player， fire repeatedly on the second piece before it is in place. If it is destroyed before it is in place， you will be given two bonuses per player instead of one. At the end of level 5 : When you arrive to the final enemy， around the hand pointing up of the statue there are two hidden icons. You can fire up with the jeep (or diagonal with the chopper)， and you will see that your shots gets stopped by something invisible. If you keep firing， finally two new icons will appear (of course you don't have to kill the final enemy). Take this icon， and you will have a bonus. The bonus depends on your rank. If you have the Eagle rank you will earn 500，000 bonus points. If you don't have it， then you will earn 100，000 bonus points and the Eagle rank.