The Drunken Lizard Pub

Read the other posts about being stuck here, but those seem to be further in than where I'm currently baffled.

Fought outside with Giants help, then entered (load screen...
for inside very beginning inside Citadel).

As I walked down the corridor, the message popped up that goblins aware of my "attack" and those 3 gates shut. Levers are just inside gates, but I can't do anything with them.

So, walked East and West, fought goblins and couple spiders.

Down hallway East of main entrance, room with lots of explosives....dead end.

To the West of main entrance, fought stuff, and there's a lever there. That lever closed the 2 small rooms W-SW where I think spiders emerged...the gates to those 2 rooms were open as I approached the area to find a few goblins and spiders. Just to North of this lever is a closed gate, with dead guy, and 3 spiders and lever (14, 108) near the dead guy.

Walked further W-NW to find a chest, and another dead end.

How do I get in with those 3 spiders and dead guy, and to that lever at 14, 108?

I'm horrible with spoilers.
but have you ever used explosives to kill enemies.
they can be used for blowing up other things too, plus its fun
get them all!

Yeah, explosive barrels can make your enemies (and other things) crumble before you...

Ya know, at one point I thought of that, but I don't have bow/arrow, so tried a magic spell (div kind)...can't remember which one, at it said must be cast on living thing.

So guess I have to schlep back to town for something to brew up, alchemy wise...I just sold 2 or 3 of them before entering the Citadel. Go figure.

Thanks for the replies.