I'm crunching down on making health upgrades more difficult to get, I want taking damage to be more meaningful and I've offloaded regen to the Vampiric Link weapon now, so emergency button got nerfed, tooltip should reflect. Shield is 5 currently, although I think it makes more sense at 7. 10 is probably a bit much, 5 is just skipping an upgrade. Tooltips fixed, thanks for letting me know. Mouse only is a mislead but I also made the game so you could play it on your phone if you wanted by avoiding the movement upgrades and I want it to be a surprise when you unlock movement. Hard/Impossible will be rebalanced tomorrow.