All the description says is "Multistrike", and I haven't figured out what exactly that means even though I've used it in a few runs now, can someone please tell me what it actually does?

I'm having tons of fun on the daily runs and was wondering if it is possible to create runs with any of the featured modifiers. Similar to Slay The Spire wherein you could add various modifiers to the run, e.g. having access to another character's deck or elites spawn more often....

I was wondering if there is an option to unlock all items with a button click or save file editing. I want to play around with some items like inverted candle but don't want to grind for hours or restarting a bunch of times for a good early game. I don't mind if this loses all steam achievements, just want to mess around for a few runs before uninstalling the game....

TDLR: What we know so far Multiclass achievement must be completed without ever picking up other items. The above method definitely works for other sets. Other set achievements can be completed by swapping as long as you only have one type at the end, but it sometimes it bugs(Either that or I made some stupid mistake 4 times) You can complete specific set achievements (not multiclass) by having 1 item of that set equipped at the end (?). Are these achievements meant t...

Not as in buff fixes and such, but if they will add more stuff for the game, or is it considered abandonedware or something.