1. One of the game's tag is text based, so idk what to say to you about that
2. The "maze" isn't really that complicated. it may not be everyone's cup of tea but even then getting through the ship shouldn't be that hard (there's a map you can find on patreon that's free if you do need help though, I'll link it though https://www.patreon.com/posts/pirate-base-map-68575685)
3. I'm doing an agility and appearance build (I'm a Sub too lol) for my main save and I admit I died to the boss a couple of times but then I managed to beat it using healing pills (the games does tell you to get a bunch). The skills all do however upgrade a certain aspect in battle so there pretty balanced.