我做的是中档的, 有5个3级urgent的，6个2级的，剩下的都是1级的，是不是全得修，就是轻重缓急不同啊？

不懂什么是2级的和1级的。
Urgent的可以直接和中介商量，必须发挥自己的Negotiation Skill，要让中介知道你要求卖方自掏解决或者降相关费用价。都是啥啊？有些关于法律的还得律师去搞。
至于2级和1 级的不知都有些什么东西？？？

就是分三个种类, 3是urgent, 2是repair or replacement requiring future attention but you should still get estimates. 1是没有立即修理或更换是必要的。

那我是不是可以要求卖方把3类和2类都修了，或是降价啊

窗户不合格，火灾的时候不能逃生, porch rot, the drains should be cleared and the system checked by a drainage contractor,kitchen和客厅间没门, internal doors 要调整，electrical wiring不符合现在的标准
好多我都看不太懂，这些都要修吗？我怎么觉得他写3的没什么必要修，倒是写2的看着挺严重的

1。窗户不合格, 可以交给律师搞，可以直接向律师索取意见，或你可以直接很律师说你的看法，这点可以施压给卖主。
2。porch rot is unlikely to obtained deduction or repair from Vendor。不过也有例外的。
3。the drains should be cleared and the system checked by a drainage contractor。这你也可以找律师，或就看你个人介不介意。
4。kitchen和客厅间没门。这不是问题，Vendor也不会理会的，现在也很流行open kitchen，所以有门没门更本就不在话下了。
5。internal doors 要调整，这些都是Maintenance问题，Vendor卖的是旧房，不是新的，他们不能确保样样都是和新的一样。
6。electrical wiring不符合现在的标准。这可以交给律师去办，让他们办了或降价，这可不便宜，1000左右，所以还让他们做了，因为有维修的可能。
只要一切和法律有关的最好都交给律师去办，别把这些法律责任让自己买房之后啃下来，之后很麻烦的。
至于其他需要换的维修的，都是你个人的看法，记得买的是旧房，vendor不会样样都顺你意的。

Speaking of survey report, or mortgage valuation report if yours is the case, it serves 2 purposes,

A) to give mortgage company, your lender an idea of what the condition of the property is; in short, is it worth the price you pay? If not, you won't get a mortgage as the money is secured against your property and if the property isn't worth the value you borrowed, the lender will potentially lose money.

to give you, the borrower an idea of what the condition of the property is; in my opinion, as long as A is satisfied (mortgage is not a problem), the report will give you great bargain power. Anything listed there will inevitably cost money and given current market condition, you will be comfortably looking at another big discount on top of your offer price.

So check with your lender to make sure they are happy with the report and then negotiate hard with the vendor. BTW it is very very usual to see problems in survey report in the UK as most of properties here are quite old now.