1) Hunttime is the Amount of seconds it takes to trigger the Hunting upgrades (Slimehunter, Forest Hunt, Desert Hunt & Hunter 1-4). It starts at 300 secs, fully upgraded it will be 5 seconds.
2) Yes, I want players to be able to zoom through later stages of the game :)
3) The base Autoattackspeed is 5 seconds and it will be divided by (1 + Autospeed increase from all sources / 100). Beating Bosses, Upgrades and Skills will raise Autospeed increase by a good amount, combined with a decent doubleclick level you smash through stages.
Hope this helped to clarify :)