Rapid Escalation (First Steam Prototype)

Thanks you pushing the game to the jME socials, I really hope to get some more feedback. In terms of the round times, one of the upgrades are specifically for the round times, however I do think the on boarding might be too difficult for people still trying to figure out what to do. I do have a question regarding the round upgrade tree, what is your thoughts on that design or do you prefer to have a more guided linear type of upgrade tree?