If anyone's interested in getting the Impossible badge the best advice is that individual obstacles aren't actually random. You actually have sets of obstacles that are randomly picked. While these sets have variations in them, it gives you a good guess as to what's coming up next and is extremely useful for level 5.
I have almost all the multipliers and one disaster click is still worth more than an energy orb at level 2500. And disasters spawn about every second thanks to the same milestones, so it's for more reliable and takes far less clicking. Part of this is because production bonuses of followers doesn't seem to do anything to energy orbs.
Can we please get a rework on Energy Orbs. As it stands it's nothing but a pit that has us spend our Omega Particles for a return that's nowhere near what we pay. And anytime you spend time doing anything you have to do an ungodly amount of clicking just to recharge it. Tower defense games are supposed to be about strategy but all you can do here is just spam towers everywhere. It really needs a complete rework.
Considering how much you like having enemies pop out out of nowhere, I would recommend adding a vision system. Also, you should improve the clarity of the level, I have to try and navigate via mini-map, and it doesn't always match the level. Also I would recommend adding salvaging as well as the ability to build defenses, close doors, and set traps. That would add to both multiplayer and single-player. Finally, A HUD for health and stamina would be appreciated.
Hello Zander, thank you for the feedback. Some zombies popups yes, consider this as ambush or traps, but the most comon situation is simply because they are behind a wall and the sight of view of your character do not go through the walls. (monsters pops when they can be viewed by your character, not by you because the game view enable to see large areas)
But maybe the pop transition is too short and make feel that the monster is teleported, we will fix this.
You can find rescue kits to regen your lifepoints. Concerning the great features you mentionned we are working hard to add some of them if the game find enough players.
Have fun.
And Touhou games are also rather easy in the early levels. Maybe if you weren't a quitter you'd find out the game get's a lot more challenging in the later levels.
 "Axon")
 "Incremental Epic Hero")
 "Absorber")
 "Frugal Knight"){kind=icon}
 "Hippolyta")
 "Cosmos Quest: The Origin")
 "Theory of Magic")
 "Idle Hamlet")
 "Unstable Engineer")
 "Imperium war")
 "Dinogen Arena")
 "Epic Boss Fighter 2")
 "Stormbound")
 "Badge Emperor")
Thank you!