Liam was thrust into the multiverse starting from MCU where he was given the ability to travel to various games where he could get some abilities, props or knowledge based on his completion rate of the story in the game world.
Start the journey again as Liam gets to see his world change from what he had known from the movies.
Its your typical webnovel Fanfic and Mc, he can kill without consequence because the System allows it. Everything goes the way the MC wants it without any type retaliation in any form anyway. But he still wants to have the canon so he plays the edgy teen and refuses to help tony directly. The Character interaction is more or less none existent its just him showing a little bit of power some sentences that are in terms of writing on the level of a 12 year old Batman fan. His system, isn't really used like in 30 Chapter he only used it 2 time such make no sense at all.