Wow, hope you can recover! I wish you good luck. Somehow I feel like I'm giving this info for free. Oh well, helping is kind.
I had the same issue a few years back. You mean you formerly had to login at
http://blockchain.info/wallet/aliasgoeshere? And when you got there you had to enter a password correct? If that is the case, I believe you can easily recover the wallet because that was my issue. I had no email attached and so was stuck. The problem is that now you must login using the identifier, rather than an alias... and you don't know the identifier? Well, it is pretty easy so if this works, can you at least throw me something? It worked for me.
All you need to do is send a request via the page below. If you send them the alias, they will supply you with the identifier. If any of the account has any details in it, you may need to provide proof that it is you. A fantastic proof of ownership is the transaction id of any of the transactions you did or a wallet address. I assume you have some piece of info that can prove it is your alias. BE SURE to mention that you have the password (but obviously do not give it) That's all I had. The alias, the password, and a wallet address that I received coin through. Within a day or so, I got an email reply saying the account identifier for this alias is xxxxx-xxxxxx-xxxxxxxxx-xxxx and from that I was easily able to sign in with my password. Wishing you the best!
https://support.blockchain.com/hc/en-usIf it works, help a poor guy out!
1BbRGQ1yBE7Py5x5ni7DT4QKU65y5a6GK2
Was just thinking, at the time this happened to me, I had about 3 btc and was selling them for a few hundred each. Damn. IDIOT!