Defenitly better than the rest people suggest.
A few things i belive we need to work on.
First can the players die? or if they do its over for them.
2nd A quest like that seems hard, especially done in ultimate, so i belive we should at least add step on light ons.
They are temporary light ons that is linked to a switch that the char needs to be constantly to keep the lights on. (Only one, so if your with a team other 3 can keep going).
The last part (after turning the lights on) i think we could add a countdown timer and a special reward (aside from meseta) to those who completes it. (In this part id be really mean and add lots of spawn to slow you down, in which case if you kill the waves of monsters fast enought, you will get your speacial reward.
More suggestions/input?