It's a decent game, just a few things that would make it better (imo obviously). First of all it is very repetitive. Same enemies, different stats. Very few options as far as equipment. Either go "fast and weak (longer range)," "medium," or "slow and powerful (shorter range)." I didn't feel like choosing one particular race over another had any impact on the game. Like someone else mentioned it would be quite a time saver to have a "shift+click" option for sacrificing equipment instead of taking a few seconds (for each piece of equipment) to drag and drop it to the sacrifice box. To sum it up, it needs something to break the monotony of the same enemies, same equipment choices, and choosing different races should feel like it changes things.
Although it's recommended to do the Survival level later on, if you're a grinder like myself I'd grind the first level a couple times to at least have one point in each attack skill, then distribute where you think is best. Then go ahead and play the survival level for a great amount of coins.
Please don't make the character automatically go to the generator and start it up if he's near it. I'm fine with starting the generator up when I enter the flashing area, but I wasn't expecting to just walk up to the generator and start it up while I thought I was out of range.
Floor 10 - poor placement of the walls makes the ramp to hit the switch much more difficult than it should be. Somehow I managed to get the ball stuck in the floor on this level.
I think this is a pretty good example of how people think of their actions before going through with them. There's always the element of unexpectedness and thinking quick on your feet can get you good results.
Combat seems clunky, too many zombies get close to you and yet you swing your melee weapon slowly. Not to mention those quicker zombies, if they happen to spawn right under you that's -1 life, then they'll immediately bump into you again because of their speed and then that's an automatic -2 lives.
@PoweRx: The drops seem to be random, as for me it took a long time until I came across the Crown while I was picking up at least a few things of almost everything else.
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:)