itch.io

Killing Jack as of right now doesent really change the story beyond how 2 characters treat you, a few dialogue lines, your corruption level, and your power stat

Killing or sparing jack doesent really boil down to right or wrong but what route your trying to go, and how much your willing to potentially deal with down the road if you spare him, hes the strongest known mind controller besides maybe melody(given the fact that Jack is the spawn of an apostle i would venture to say he is definitely stronger or will be in the future), H.E.R.O. could become a real thorn in your side later on if they have jack at their disposal, so it really just depends on what route your going through and whether or not you want to break away from hero in the future If WeirdWorld chooses to diverge the story like that, personally i have two saves one where i killed him and one where i didn't because i feel like it will play a big part in future updates

Which ones if you remember? most of the fight choices i ran into were, you die, or you don't die

Didnt know that bit, i was trying to keep my corruption low 

just train whenever the options show up, also interactions with Michael can increase skill, near the end of the current update the shop keep sells a few items that increase power and skill, as far as i know evolution 3 is the furthest you can get atm