Rope arrows don't save you from projectiles. Lockpicking has nothing to do with enemies. The rest are consumables, that have limited uses. There's difference between hiding in shadows or out of line of sight, not making noise, and hiding in a completely safe zone, which isn't reachable by anyone and anything. It's almost a cheat because it's easy to abuse without any shortcoming. Alien: Isolation is so tense because there are no safe zones. The xenomorph adapts and will find you anywhere.
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I played 1.1 and watched 1.0 playthrough. They're hardly TOTALLY different. Main difference is that some enemies can be defeated (you don't need to sneak past them, but I should say that sneaking is mostly easier and quicker) and there's one forced duel where you need to duel a haunt for a minute straight in the original, but in 1.1 he dies a bit quicker. Everything else is nearly the same, just a bit more palpable.
It's up to you, of course, to keep these releases separate.