I hope that old age and the passage of time doesn't mean that I am giving you bad hints but here goes....

> 1. Where do I get the sledgehammer?
Have you been as deep into the caverns as you can

> 2. There's a Tachyone SomethingOrOther that I don't have. Where's that?
You make it - you should have access to the instructions by now

> 3. What do I do with the round pot?
I can't remember anything particular but if it comes in handy you will be prompted.

> 4. What do I do with the Leather vest?
wear it - I know that sounds straight forward but as the game develops it will become clear

> 5. Is it possible to get a spiffy soda for the kid?
yes

> 6. If it is, how do I do it?
it is locked away somewhere

> 7. I have four nanoxite stones, and 5 Peryolitium shards. Do I need more?
I fyou don't mind me saying so, I think you are a shard short of a Tachyon Shield Plate

> 8. The items I dropped in Verna's room after dashing out and leaving the key, do I need them?
No - I think it was the key you dropped.

> 9. If so, how do I get them back?
>
> I think that's about it for now. I'll ask more if they occur to me. Thanks for your help in advance!
>
> Rift "I hate asking for help, cause I feel so dumb" Traveler

Gobha"I like to give help cos it makes me feel less dumb after asking for help all the way through"Mor