Mastermind Pistolero Educated Lone Wolf is nearing endgame. Able to handle most combats and most skill checks, though only just. It seems to be Computer and Electronics are the best to tag, whereas many of the others you can keep up more organically.
When, if at all, did you hit level 10? Also did you get the neural uplink early for the bonus +10% experience from 11 INT? Wondering if that bonus feat at level 10 isn't too late. I barely hit level 8 with mastermind and I'm very close to the end, but that's with two party members and not getting a neural jack at all.
Which encounters/quests did you choose to completely avoid due to being impossible?
I'm currently about to finish some loose ends, and I'm just a bit short, actually - 10/8/9 Science, 8/7/8 Stealth, for example. However, I made some suboptimal choices in my tagging (I would go Comp/Elec/Lockpick, whereas I went Crit/Biotech/Streetwise), I passed on the datajack to remain at 10 INT, and I'm sure there's some bits of XP I missed out on (but can you even get to Level 11?). So somebody who optimises further may just go over that final hump - I would say that Comp/Elec/Lockpick are really the only ones worth getting to 10, no?
I was able to do a fair bit. Finished the arena, the Protectorate Elevator, the First Law of Robotics fight, the bounties, the Yellow Hydroponics fights. I stealthed the Landing Bay and the Fuel Cell out of personal preference and didn't try the fights. I'm currently debating whether to bother with Ol' Bub - I might be able to grind it out but I just don't like the psionic fights in the game. Red Hydroponics optional fight I may also skip.
I also tried going Reaction Pistolero this time, but wonder if Rifler may fare better, and tagging Armour to get a headstart on gearing up. Not tagging armour + 4 STR + Reaction build meant you just don't take enough hits to level up armour very fast, though I proritised it in the skill tokens and got it up to 6.