All those who don't want to spend years on this for the achievements, just have the game open and adjust your computer clock ahead like 5 years, then reset it automatically back to present time.
Easy mode is Demon with frozen bow and set. Just put some points into agility then just pump vitality, you will start icebolts that will clear a swarm of mobs in a room in seconds. Seriously, this is really broken.
If you are having trouble with elevators, just S-fold them. Build 3-4, then move a space over and put a new elevator shaft in and go up 3-4 more rooms, then switch back to the first shaft so that there is a gap between the elevators. This is more expensive, but keeps guests moving constantly and avoiding long delays in elevator times.
An easy deck build for those after the badge is lots of gold mines, peasants, and parting gift, along with a few of the spell that converts gold to crystal to pay for parting gift. Simply spam build peasants, and watch as they die and kill your enemies gate. + if this helps!
Yes Int helps healing, had 100 int and was healing for 120. Although Int doesn't seem to affect Skeletons (once they upgrade at 40 or 50), or that AoE Swarm attack. At 100 int, it was only doing 16 damage a second. Necromancer starts to become useless around dungeon 10 or so, would be nice if pets scaled with Int = hp/regen/damage.
Solar systems with larger planets would be cool, like say blue super giant stars with giant gas planets surrounding them, and a zoom in/out function would be nice too if you do incorperate larger maps.
Beat the game as #1 Mage, Grand Mage and all that junk, really easy to do with the Ice mage, the free attack skill and cancel enemy attack is way overpowered compared to the other mages abilities. Once you get into longer fights later in the game, as long as you have enough mana you will win.