Am I correct in thinking that both "äntligen" and "till sist" both mean "finally" or "at last" whereas both "slutligen" and "till slut" mean something more along the lines of "eventually" or "in the end"?
No, because the V2 rule makes it so the verb needs to be second. So if "äntligen" is first it has to be "äntligen kommer han" and if "han" is first it has to be "han kommer äntligen", and no other word order works for this sentence because" kommer" has to stay in that 2nd spot
Is the G in äntligen pronounced? Full sentence pronounces it, but mouse over does not.
Both ways work, in everyday speech people often skip the g, but not always. If we speak slowly and clearly, the g will be heard.
Can this mean both "He is finally coming (with us as we go somewhere)" as well as "He finally comes (to where we are)"?
How exactly to synonyms work in Swedish, like helt: means Absolutely, completely, and maybe more, but the part that gets me confused is; Is there more ways to say helt in Swedish like fancier, more formal, or impolite way, can someone please answer me on this, Tack!