@Walks:
Thanks for the questions! It's this type of question asking that i'm more than willing to answer and really want you to do to push the story along!
1.) In terms of sneaking into the door when it's open, you could, but it would be a serious long-shot since it's quite out in the open and there's not much cover in astral or physical plane. The other problem is that you can't see the spirit so you can't even really see where it's "gaze" is. In terms of dice....I would give you a -4 to infiltration....then another -2 for being awakened. If you succeed in a masking test then you'd only get the -4. Your infil roll would have to beat an assensing test by the spirit and a perception roll by the two guards. It would also have to beat the perception test by any surveillance but getting perceived by surveillance would take a little longer to cause a response.
2.) Yes, just like with any spirit you summon. Remember, they have Force 1 and really low stats.
3.) Yes, you can burn Edge to get 4 net hits (critical success) on 1 test...be it against a threshold or an opposed test. So for example, if you had to sneak past two people, even though you'd make only 1 infil roll, you could only burn edge on one opposed test...i.e. against 1 person you get 4 net hits and against the other person it would just depend on what their perception test was.
I have the final word to say if you can burn edge on a given test or not though depending on its feasibility or just if I feel its too crucial a test to just give it away....i.e. "I do a data search for Olivier Sanon's current location....and i'm burning edge on it." is not gonna happen, understand?
4.) Well, remember, only non-living things cast an "astral shadow", but you could conceivably hide behind Mercedes astral brightness. I'll say only an awakened person or creature of similar or bigger size to you would be bright enough to help with this. I'll give you a +2 to infil for this.
5.) Deepweed would give you astral perception, but would give you the standard -2 to all non-astral/magical actions. The one problem is that for someone who doesn't have an Assenssing skill, astral space looks like a very very confusing jumble of "lights" "colors" and feelings. Notice one cannot default on assensing.... but in cases like these I'll allow you to default to Intuition - 1 in lieu of a perception test while seeing astrally... .but you can't read auras and get information about any aura.
@Everyone:
Since I wanna push the story along I'm gonna start giving out Karma for posts, IC or OOC that I deem push the plot along or flesh out your plans well. I think some Karma might lubricate the wheels a little get people more proactive about planning/legwork type phases
So I'll start off with giving Walks 1 point of Karma. Who else wants some?