"It''s too difficult to upgrade from level 4 to level 5."

    Absorbing the soul power of a fallen wizard, Tang fan sighed in his heart.

    Upgrading from level 4 to level 5 requires the soul power of 20 level 4 demons, but obviously, the demons that have appeared so far are level 2. Even level 2 elite demons are equivalent to level 3 ordinary demons.

    The soul power of level 3 demons needs 60, but level 3 demons have not appeared, and the number of level 2 elite demons is less than 60.

    Although there are some level 2 demons, it is still difficult to kill 180. As for level 1 demons, 540 will not be finished even if they wait in line to kill themselves. Moreover, demons will fight back and are in groups, which is more difficult.

    "Which floor is this?" Wang Qiang asked, wheezing heavily.

    "The 15th floor." although Tang fan''s breathing is a little short, it is obviously much better, indicating that his endurance is much better than others.

    Starting from the first floor, I rushed up the stairs layer by layer, and kept going up, killing a path of blood.

    Tang fan''s purpose is to destroy the magic source on the top floor, not to kill demons. Therefore, every time they enter a floor, they will rush up the stairs as fast as possible.

    However, after entering the first floor and killing some demons, the smell of blood and movement immediately attracted many demons. These demons were pursued layer by layer and surged like a tide. Tang fan had to fight back and forth with the demons.

    So far, there have been several elite demons, all of which have been killed and summoned by Tang fan as level 2 skeleton warriors.

    Now, two skeleton warriors fight for the main force in the front, and two fight against the devil in the back. It is precisely because the four level 2 skeleton warriors have resisted most of the devil''s attacks, Tang fan did not suffer any loss.

    It''s just a few minor injuries.

    Even with the strength of the skeleton warriors, in the face of the continuous devil impact, the bones on their bodies have been cut out many scars. Fortunately, the skeleton is not human and does not know the pain.

    The skeleton warrior kept killing up, and Tang fan and others followed him and slowly rushed in.

    From time to time, Tang fan will release his teeth and attack the fallen wizards who are about to release the fireball to ensure the safety of his team members.

    Fortunately, starting from the stairs on the first floor, the upward stairs are connected. In addition, the stairs are only more than two meters and three meters wide, which makes the demons unable to form a siege in all directions. Invisibly, Tang fan''s attack is much weaker.

    "There are only three of my crossbows and arrows left." Lan Ruolin suddenly made a noise.

    She has always been protected among the people, but the crossbow and arrow in her hand attack the fallen wizards who are about to release the fireball from time to time, causing the wizards to be hurt and unable to sing a spell to release the fireball.

    However, in most cases, it is difficult to recover the crossbows and arrows shot, because there are too many demons. No one dares to go deep into the demon group to recover the crossbows and arrows. In this way, even though the number of shots is not many, one crossbow and arrow is used less than the other.

    "We need to rest," said Li Si, his forehead covered with sweat.

    After continuous high-intensity fighting, they are quite tired. Moreover, the hunger in the stomach and air constantly invades the whole body. If they don''t rest, it''s estimated that they won''t last long. Tang fan also feels that he doesn''t have much magic left and needs some time to recover.

    "What time is it now?" Tang fan asked.

    "More than five o''clock in the afternoon, it''s almost six o''clock." Wang Meng glanced at his mobile phone quickly.

    "It''s almost night."

    Tang fan glanced. The 15th floor was almost the same as the lower floors, separated by rooms of different sizes. In the middle was a corridor connecting the whole 15th floor.

    "Kill there, let''s go in and have a rest." Tang fan pointed to the open door not far away and said.

    Under the control of Tang fan, the skeleton warrior opened a blood path. Tang fan and others quickly followed up while absorbing the soul power of the beheaded devil.

    After being promoted to level 4, his mental power has increased a lot. Tang fan''s soul absorbs faster and the distance has also increased. In the past, he needed to be close to the devil''s head to absorb it. Now he can absorb the devil''s soul power as long as he is no more than one meter away.

    It was almost ten meters from the stairs to the open door, but the devil was heavily blocked and it was very difficult to move forward.

    Two skeleton warriors open the way in front, and two are responsible for breaking up. Tang fan and others are constantly wandering to kill the surrounding demons.

    LAN Ruolin only had one of the three crossbows and arrows. When they rushed over the ten meters, they were more or less injured.

    Rushed into the room and a hard thorn came flying.

    Tang fan reacted quickly and split the hard spike with a knife. Li Si was short and rushed forward like a strong wind. The machete in his hand stabbed suddenly. Tang fan stretched out one hand and recited the spell silently. In less than a second, his teeth flew away and bombarded the elite hard haired mouse with a blood hole.

    LAN Ruolin quickly raises the crossbow. The crossbow breaks open and avoids the hard thorn and shoots it into the hard haired mouse.

    With the joint efforts of several people, the elite hard haired mouse who stayed in the room and didn''t go out was simply ground to death. Naturally, the soul power could not escape Tang fan''s hand.

    The room was small, like a lounge. There was only one door. Four skeleton warriors blocked the door and lined up to kill the approaching demons. The door was closed and the curtains were tightened.

    Turn on the switch and find that the light is not on. I don''t know whether it is broken or the power has been damaged.

    After searching the room, they found two candles and a lighter. Tang fan and Wang Meng opened their backpacks, took out food and water and distributed them to the people.

    After eating the food, it was already six o''clock in the evening. At this time, the sky outside became dark, and the whole city was lifeless and without lights. It was completely in darkness.

    When the wind blows, it is desolate like a ghost, wandering in the streets of the city, making a cold whine sound from the bottom of my heart, like Senluo hell.

    Outside the room, the demons continued to attack, again and again, but all were resisted by four skeleton warriors, and the ribs on the skeleton warriors were broken several times, and the other bones were more or less scarred, indicating the tragic battle.

    Demons are fearless of death and rush up one after another, but they are level 1 and level 2 demons. Occasionally, a level 2 elite can fight with a skeleton warrior and be killed immediately under the joint efforts of two skeleton warriors.

    (see in the eyes, worry in the heart, the complaints about recommended tickets and collection)