Does the Climb common skill allow moving up or down inclined non-horizontal surfaces, or is it only for 90° vertical surfaces? (Basically, how literally should we play the “vertical” part of the rules for Climb and Climbing Plus?) What about negative slopes and overhangs? Can a trooper performing Climb move diagonally or laterally on the vertical surface, or is that restricted to Climbing Plus? If a Climbing trooper can move diagonally/laterally, can they climb around the corner from one face of a building to the next, or is their movement restricted to the building face they started on? What about Climbing Plus? Do either Climb or Climbing Plus permit declaring movement on the underside of a surface like a ceiling or the bottom of a walkway? Most of my time declaring vertical movement has been with Climbing+ or the non-Climb movement up ladders and stairs, but after an exchange on Discord I suspect I may have been playing with a misunderstanding of the regular Climb rules. Plz advise, am I a dumb? If so, is it because of this?
If you're playing with surfaces that are not clearly vertical or clearly horizontal or clearly slopes/stairs that are meant to be traversible, you'll need to discuss this with your opponent. I would personally play any surface that a reference piece (f.ex. a copper cylinder the size of an S2) can't stand on without falling over as vertical. It's basically not hard defined in the rules. I have no input on lateral climb, though I'm starting to suspect that regular climb is meant to be up or down only. I think the old N3 movement rules had some pretty weird interactions with movement on an upside down horizontal surface. I'd suggest that climb+ is meant to allow it and house rule as you think appropriate. Just a small aside, climb+ has changed subtly this edition. You can no longer use dodge movement nor guts rolls movement on vertical surfaces in spite of climb+.
I have the same suspicion, based on the fact that Climb movement distance only includes the vertical distance, not the horizontal distance to shift your base onto and off the wall. It seems to be a skill specifically about climbing straight up or down, and not a version of Move on walls. But it's unclear, unfortunately.
Hm. For cinematic purposes I'd prefer if Climb allowed you to do things like climb off a balcony, around the corner of a building, and up to a balcony on a higher level, or to hand-over-hand move while dangling from the underside of a catwalk, but those aren't exactly frequent occurrences in the game because Climb is so slow and order-intensive in the first place. This is really mostly a hypothetical question, but clarification would be nice if only to help understand how the authors mean for us to play it.
One of the things I started wondering today is when is a surface vertical or horizontal in Infinity? I'm pretty sure you can walk on slightly tilted surfaces no problem as horizontal, like a 10° angled roof, but why? Is there supposed to be a cutoff at 45° where surfaces start counting as vertical? That would be a purely logical point for cutoff (but then what about surfaces at 45°?), couldn't find anything in the rules to hinge a definition on unfortunately. Technically horizontal is 0° (aligned with the horizon) and vertical is 90° (aligned with gravity) anything in between would not fall under any classification if we go by definition. Edit: Don't think that's any different in Spanish since those are mathematical terms with translateable definitions, but can somone confirm?
Welcome to the rules section, you don't have to play the lawyer game if you don't like it. This has always been about asking questions and getting to a result, not about if we like that result or not.
I think this is the sort of thing you need to cover when creating a table, along with what terrain elements (if any) count as low/zero vis zones, what counts as a ladder/stairs, etc. It's going to be blindingly obvious in 99% of cases but if there are terrain elements that'll be edge cases that's something to discuss when laying out the table (or for a TO to note at tournaments).