以下是所有新游戏选项的功能说明，助你选择最适合自己的选项。 难度

这款游戏难度较高。建议从老兵难度开始，然后尝试指挥官难度，最后挑战传奇难度。 传奇难度比指挥官难度要难上不少。传奇难度的变化包括： - **初始 Advent 士兵的生命值从 3 提升至 4。初始手雷的伤害为 3-4，因此手雷不再能确保击杀 Advent 士兵。其他敌人的生命值也相应提高。** - **研究和制作物品需要更多的尸体。** - **许多物品的制作成本有所增加。** - **士兵升级所需的经验值提高。** 高级选项

“Beta strike”通常是一个不太受欢迎的选项，不过也有一些人喜欢。我尝试过一次。想知道它是什么感觉的话，可以想象一下，在任务2中，几个拥有20点生命值的“ Sectoid（ Sectoid）”控制了你的新兵。这是一种截然不同的游戏体验，我不推荐新手尝试。 收割者/游骑兵/圣殿骑士盟友： 如果你在新游戏设置的后期选择了“失落与遗弃”（请参阅本指南的“可选叙事内容和集成DLC”部分），那么你在此屏幕上选择的盟友将被忽略，并且在“Gatecrasher”任务中不会以派系盟友的身份开始。 如果你未激活“失落与遗弃”，且在高级选项中未选择派系盟友，那么在“Gatecrasher”任务中，你的队伍将随机获得一名派系盟友。选择“收割者”作为盟友通常是最容易的开局方式。移动选择对战术成功影响最大，而收割者的隐蔽侦察能力能显著帮助你做出更好的移动决策。不过，所有派系英雄开局都各有优势，因此建议尝试不同派系英雄作为初始盟友。“冷酷地平线”正如其名，永久黑暗事件会使游戏难度大幅提升。 “漫长阴谋”会让外星人完成“化身计划”并触发游戏结束倒计时所需的进度增加一倍。如果你觉得化身计划难以控制，可以选择此选项。 “时间转换器”会使限时任务的回合数增加一倍。部分任务的倒计时非常紧张，这极大地增加了任务失败的风险，或者为了及时完成任务而造成惨重伤亡。许多社区成员认为保持较短的回合倒计时是合理的，当你熟悉游戏后确实如此。若将倒计时延长一倍，你会几乎感受不到时间压力。一个折中的方法是使用《幽浮：未知敌人》的“Timer Tweaks”之类的模组。你可以尝试找到最适合自己的设置。 精准爆炸物：会消除对爆炸边缘单位造成最大伤害的可能性。这对爆炸物来说是一个显著的削弱，不推荐使用。 一些模组会在“高级选项”中添加游戏玩法选项。以下是一些示例： “第二波：选择天选者”模组允许你选择首先面对的天选者。猎人可能是最简单的，刺客则是最难的。 有许多优秀的模组可以随机化初始新兵的属性，并在高级选项中添加相关设置。我个人更喜欢“点数制：天赋各异”。 教程 通常情况下，传奇难度无法游玩教程。我建议只在进行你的第一个战役时才游玩教程。 请注意，教程中的第一个任务完全是脚本化的，你只需按照指示点击即可。 如果你想在传奇难度下使用教程，有一个模组可以实现这一点。我不推荐它，因为与正常开局不同，你的“复仇者号”不会有一个预先挖掘好的免费房间：传奇教程启用器。 点击“下一步”后：选择铁人模式或非铁人模式

铁人模式会定期自动保存游戏，且只允许保留一个存档。 我建议先通过反复读档（save scumming）来熟悉老兵、指挥官和传奇难度，之后再挑战铁人模式下的老兵、指挥官和传奇难度。要想在传奇铁人模式中成功，你需要对游戏有非常深入的了解。 你需要放慢游戏节奏，仔细思考每个士兵的每一步行动。这种较慢的游戏节奏可能不会让你觉得那么有趣。 糟糕的移动选择导致触发多个敌人小队（pods），是最有可能导致铁人模式战役失败的原因。要持续做出良好的战术决策，需要练习、耐心和谨慎。 即便是无心的误操作，铁人模式也可能会带来严重的后果。如果你觉得自己不适合铁人模式，更想体验普通玩法，那么当你犯下严重错误后，可以立即同时按下Alt和F4键，《幽浮2》会立即关闭，通常能阻止游戏保存。 游戏可能会出现一些漏洞，尤其是在使用模组的情况下。我曾遇到过铁人模式存档损坏导致无法游玩的情况，这非常令人失望。 如果你开启铁人模式，游戏结束时的胜利总结界面会显示“IRONMAN”，这样你就可以截图并在Reddit上展示你的成就。最终以铁人模式通关游戏的感觉也确实很棒。 作为替代方案，你可以尝试“诚实模式”：不开启铁人模式，但也不会为了撤销操作而随意重新加载存档。这种方式能让你在游戏存档损坏时，重新加载更早的存档。你也可以在确实误操作或其他你认为合适的情况下允许自己重新加载存档。在犯下致命错误后重新加载的诱惑可能非常强烈，但这样一来，你将无法在游戏胜利总结的末尾获得梦寐以求的“IRONMAN”成就。 有些人会玩“青铜模式”，即他们只会从任务开始时重新加载。也就是说，如果他们犯了错误并想重新加载，就会从任务开始时的存档重新加载，并重新完整游玩整个任务。 可选叙事内容与整合DLC

There are some spoilers in this section. Much of this information is contained in a table I uploaded to Google Drive: Optional Narrative Content and Integrated DLC Table[docs.google.com] Lost and Abandoned Enable this series of missions at least once to play the content. It is a scripted series of missions that you won't otherwise experience. I suggest disabling Lost and Abandoned for most playthroughs because when you play through “Lost and Abandoned” your first faction soldier will always be a reaper and your first chosen will always be the Assassin. You won't have a faction soldier on the Gatecrasher mission and the flow of the early campaign missions will be different.If you enable "Lost and Abandoned," you will not have a faction ally on the Gatecrasher mission, even if you chose a faction ally earlier in the Advanced Options.Integrated Downloadable Content If Integrated Downloadable Content is kept checked: To get the Alien Hunters weapons you will need to research Experimental Weapons with Tygan, build the Proving Grounds, and then individually manufacture each of the Alien Hunters weapons in the Proving Ground. This the slowest and most expensive way to get these weapons. The weapons are very powerful, so some may consider this a more fair way to get the weapons. The Alien Rulers will be assigned to guard Avatar facilities as they are constructed. Each facility guarded by an Alien Ruler will be marked with yellow warning text about a powerful enemy being at the facility. The first new facility will have the Viper King, the next the Berserker Queen, and the third the Archon King. If you make a note of each facility as it is built, you will know exactly where each Ruler is located. If you do not kill the Ruler when you assault the facility they spawn at, that Ruler will then start to show up randomly on missions. This makes assaulting the earliest Avatar facilities much more dangerous and meaningful at early levels and so can make controlling Avatar project progress more challenging. SPARKs can be built in the Proving Grounds by choosing the "SPARK" project. If you uncheck Integrated Downloadable Content: I recommend enabling "Alien Hunters: The Nest" and "Shen's Last Gift: The Lost Towers" each at least once to experience the content. You will be taken through a couple missions you would not otherwise experience. The "Alien Hunters" and "Shen's Last Gift" missions are not directly integrated, so you can enable one while not enabling the other. You can try both missions in the same campaign or try them separately in different campaigns. If you do not enable Alien Hunters, then:The Alien Rulers will eventually show up randomly on missions You can individually build each of the Alien Hunters weapons at any time simply by choosing "Build Items" under the Engineering tab and paying the required amount of supplies. You will be able use supplies to upgrade the weapons as you tech up.If you enable the "Alien Hunters": (spoilers follow) You will get an early scan (“Location Beacon”) to pick up the frost bomb, bolt caster, shadowkeeper, and hunter's axe immediately, no proving grounds required, no construction time or cost. These weapons are extremely helpful early on. However, upgrading the weapons to higher tech tiers will be gated behind a later "Alien Nest" mission. The Alien Rulers are gated behind a later "Alien Nest" mission which is unlocked after you scan the "Triangulate Position" site on the world map (it will eventually show up marked with 3 skulls on the world map). If you don’t complete the "Alien Nest" mission, the Rulers will not spawn. You will be free to conduct any mission and attack any convenient avatar facility without worrying about Rulers. You can wait and do the Alien Nest mission after all 3 chosen are killed or whenever you prefer. Note that you can't upgrade the bolt caster, shadowkeeper or axe until after you complete the Alien Nest mission. That has no effect on the frost bomb which is extremely useful from the start, and the other weapons still feel useful due to their increased aim even when you have magnetic weapon options. The unupgraded axe does as much damage as a tech tier 2 sword and gives one free action attack, so you will probably want to use it at least through tech tier 2. The Alien Nest mission features the Viper King and a couple dozen junior vipers that Central can melee to death using his reaper skill. If you bring strong enough soldiers (e.g. a reaper with expanded magazine, repeater and the banish skill), you can kill the Viper King on its first appearance. After the Alien Nest mission, the Alien Rulers will show up at random* on future missions. If you have the Shadow Chamber up and running, you can tell that an Alien Ruler is on the mission if it has an unusually low amount of enemies. If you wait until very late in the campaign to do the Alien Nest mission, the Alien Rulers will show up on your very next missions. If you didn't kill him at the Nest, the Viper King may be on cooldown, but the Berzerker Queen and Archon King can show up on consecutive missions. If you don't want to play with the Alien Hunters weapons or Alien Rulers, the only way you can do that is by enabling the Alien Hunters and then never scanning the Location Beacon.If you enable Shen's Last Gift you will get a mission scan to investigate the "Lost Towers". At the end of the mission you will get a free SPARK and you can build additional SPARKs in the Proving Grounds. If you do not enable Shen's Last Gift, SPARKs can be built in the Proving Grounds by choosing the "Mechanized Warfare" project.