If it was the Mythical Weapon Skin for the Call of Duty mobile game, it would cost 20 yuan to level 0 - 1, 100 yuan to level 1 - 2, 240 yuan to level 2 - 3, and 540 yuan to level 3 - 4. In that case, the total cost of upgrading the Mythical Weapon to level 4 would be 20+100+240+540 = 900 yuan.

In the Call of Duty mobile game, the upgrade materials for mythical weapons needed to be obtained by opening boxes. Each box had at least 10 upgrade materials, and there could be up to 80. To obtain 2000 upgrade materials, it would take about 30 to 50 boxes. It was estimated that upgrading mythical weapons would cost about 500 RMB. In addition, the total cost of upgrading the Mythical weapon to the maximum level also included the price of the weapon itself, which was 1000 yuan, and the price of all the cards drawn, which was about 1500 yuan (the price of the Mythical skin wheel in the Call of Duty mobile game changed to 3, 5, 10, 20, 40, 60, 90, 150, 210, and 420, and a total of 1008 cards could be obtained), totaling about 2500 yuan. The minimum price of the Mythical Wheel was 1080 yuan, and the demand for points would gradually increase (the eighth time required 1500 points, the ninth time required 2100 points, and the tenth time required 4200 points).
In the Call of Duty mobile game, Mythical weapons cost 20 yuan to level 0 - 1, 100 yuan to level 1 - 2, 240 yuan to level 2 - 3, and 540 yuan to level 3 - 4. Therefore, upgrading a Mythical weapon to level 4 cost 900 yuan.
In the Call of Duty mobile game, the cost of upgrading a Mythical weapon was about 500 RMB. The minimum price of the Mythical Wheel was 1080 yuan, and the demand for the points would gradually increase. The eighth time required 1500 points, the ninth time required 2100 points, and the tenth time required 4200 points. The upgrading materials of the Mythical Weapon needed to be obtained by opening the box. Each box had at least 10 upgrading materials, and there could be up to 80. To obtain 2000 upgrading materials, it would require about 30 to 50 boxes, which would cost about 500 yuan.
The price of upgrading the Mythical Weapon Skin was about 1500 yuan. The specific cost of each level was as follows: Level 0 - 1:20 yuan; Level 1 - 2:100 yuan; Level 2 - 3:240 yuan; Level 3 - 4:540 yuan; Level 4 - 5:90 yuan; Level 5 - 6:120 yuan; Level 6 - 7:250 yuan; Level 7 - 8:640 yuan. If he obtained a Mythical weapon (priced at about 1000 yuan) and upgraded it to the maximum level, the total cost would be about 2500 yuan. In addition, the Mythical Weapon Wheel would cost 1080 yuan.
Different games had different ways to level up mythical weapons. In " Vitality Knight," the way to level up mythical weapons was as follows: First, the three weapons must be reforged with the highest enhancement level. For example, if two of the three weapons were at enhancement level 0 and one was at enhancement level 13, then the lowest reforged weapon would be at enhancement level 13. Therefore, in the later stages of the game, you could check the inventory and see that there were white, blue, and green weapons at enhancement level 15 that could be reforged and upgraded like this. Second, if there were two weapons in the Remake Bar that could be combined, it would be a combined weapon. This rule would take effect at the same time as the first rule. For example, if there was a +15 samurai sword,+0 Uzi gun, or +0 Sakura Shotgun, they would be reforged according to this rule. Third, weapons that could be synthesized, if thrown on the ground, would be added. For example, 3 Rainbow,+4 Gatling Gun, if thrown on the ground, would be +7.
Mythical weapons had different ways of upgrading in different games. In Vitality Knight, there were several ways to level up: 1. For example, two of the three weapons would be at Level 0, and one would be at Level 13. The lowest level would be Level 13, so you could check the warehouse later. If there were White, Blue, and Green Level 15 weapons, you could upgrade them like this. 2. If there were two weapons in the Remake tab that could be combined, it would be a combined weapon. This rule would take effect at the same time as the first rule. For example, if there was a +15 samurai sword,+0 Uzi gun, and +0 Sakura Shotgun, they would be recast according to this rule. 3. Weapons that could be synthesized, if they were thrown on the ground, would be added. For example, 3 Rainbow,+4 Gatling Gun, if thrown on the ground, would be +7.
Mythical weapons had different ways of upgrading in different games. In Vitality Knight, there were several ways to level up mythical weapons: 1. For example, two of the three weapons would be at Level 0, and one would be at Level 13. The lowest level would be Level 13, so you could check the warehouse later. If there were White, Blue, and Green Level 15 weapons, you could upgrade them like this. 2. If there were two weapons in the Remake tab that could be combined, it would be a combined weapon. This rule would take effect at the same time as the first rule. For example, if there was a +15 samurai sword,+0 Uzi gun, and +0 Sakura Shotgun, they would be recast according to this rule. 3. Weapons that could be synthesized, if they were thrown on the ground, would be added. For example, 3 Rainbow,+4 Gatling Gun, if thrown on the ground, would be +7.
Different games had different ways to level up mythical weapons. In " Vitality Knight," the way to level up mythical weapons was as follows: 1. For example, two of the three weapons would be at Level 0, and one would be at Level 13. The lowest level would be Level 13. In the later stages, you could check the inventory. If there were White, Blue, and Green Level 15 weapons, you could upgrade them like this. 2. If there were two weapons in the Remake tab that could be combined, it would be a combined weapon. This rule would take effect at the same time as the first rule. For example, if there was a +15 samurai sword,+0 Uzi gun, and +0 Sakura Shotgun, they would be recast according to this rule. 3. Weapons that could be synthesized, if they were thrown on the ground, would be added. For example, 3 Rainbow,+4 Gatling Gun, if thrown on the ground, would be +7. Since there was no mention of the way to level up mythical weapons in other games, the above was only based on Vitality Knight as an example.
Mythical weapons could be divided into the following levels: 1. [Spirit weapon: Forged by the wandering cultivators of the mortal world. They know a little about the art of refining weapons. Even if they are lucky enough to fuse precious materials to forge a weapon, it will only be slightly sharper than ordinary weapons and have some special effects. In the eyes of Shangxian, it is like scrap metal.] 2. [Celestial Artifacts: These are weapons used by ordinary immortals and some mountain kings of the demon race.] The materials used to make it were carefully selected. It needed to be forged with true fire of two or more colors to remove impurities. It took a long time and would be fused with heavenly and earthly treasures, thus possessing extraordinary power. 3. [Divine Artifact: It is higher than immortal artifacts. The materials used are more stringent. Refining it requires a master who is proficient in the art of refining treasures, such as the Grand Supreme Elder. Moreover, it often requires the help of external forces. For example, when forging the nine-toothed rake, the Grand Supreme Elder asked for the help of Liu Ding, Liu Jia, and the Star Official Dayao.] The Jingu Staff and the Purple Gold Bell were divine artifacts. 4. Holy Weapon: It is the evolution of a divine weapon. It is closely related to the progress of a person's cultivation. The magic weapon can advance with the improvement of the master's cultivation. Some of them become the master's "treasure of Dao verification" and the power changes are more obvious. For example, the King Kong Bracelet of Laojun and the Four Immortal Slaying Swords of Tongtian are holy weapons. 5. [Xuanhuang Treasure: This is a mythical weapon of a higher level than a holy weapon.]
Different games had different ways to level up mythical weapons, so the way to level up mythical weapons to the maximum also varied from game to game. In " Vitality Knight ", there were several ways to level up Mythical weapons to the maximum. First, the three weapons could be remade with the highest enhancement level. For example, two of the three weapons would be at 0 enhancement level, and one would be at 13 enhancement level. The lowest remade weapon would be at 13 enhancement level. In the later stages, you could check the warehouse. If there were white, blue, and green weapons at 15 enhancement level, you could remake and level them up like this. Second, if there were two weapons in the Remake tab that could be combined, it would be a combined weapon. This rule would take effect at the same time as the first rule. For example, if there was a +15 samurai sword,+0 Uzi gun, and +0 Sakura Shotgun, they would be recast according to this rule. Third, if there were weapons that could be combined, they would be added to the ground. For example, if they were thrown to the ground, they would be added to the ground. For example, if they were thrown to the ground, they would be +7. However, since it was not clear which game the mythical weapon was from, it was impossible to tell exactly how it could be upgraded to the max.