I first started one mission of stealth with the apparel they give us with the bonus stealth. NPCs were spotting me through grilled vent in the ceiling and they were VERY motivated to search for me for an eternity (I craved for a: “it must be the wind” line). I did it with 1 point in, it wasn’t easy but less of a pain and NPCs could abandon the search with a nice “He got away”. I still saved a bunch and repeat some sections for this one. I think the last mission or second to last I just given up and change status from detected to danger and undected again in repeat.
I think the persuasion skill is really useful through out the gameplay, espacially at the beginning. you can gain time and save ammo. Security and wealth were useful to have. A point in boost pack is fun too. I did not invest in exploring or crafting since I didn’t engage much in them. Later, investing in pure DPS was profitable too (ballisitc/energy, pistol/rifle, etc). If ship building is your thing, piloting and ship design later on is also nice.