I have a +3 vampiric shortsword, and am going to reforge a +2 shortsword with it.
I have not ran into any other weapons, wondering if I need to trade up, or just spam scrolls of upgrade into armour I find, because I will have a +4 vampiric shortsword
Oh no! Sorry I hadn't answered timely enough! =(
I would've asked what Depth you were on, before asking you anything else.
But I also would've suggested you wait for the best weapon & armor you could find (up until Depth 12~13), before investing Upgrade scrolls into anything; and that trading up is recommended, until you either find the best weapon/armor, or have reached Depth 12-13 & still haven't found anything (in which case you upgrade whatever best weapon/armor you've found thus far & just go for it).
My guides cover the optimal weapon & armor levels you should have, at a given depth/stage/boss fight, so I suggest giving those green numbers a look. ; j
Eventually, though/With enough time, you'll get a natural feel for what levels you'll need to have to be able to take things on. =)
I am so wary of animated statues. If I see one on level 1 or 2 I'll wait till I'm level 3 before engaging. Occasionally they will have a good upgraded weapon, possibly even a stunner. Two hits are enough and you're dead.