Review Detail of DaoistsCu1en in Weapon seller in the world of magic

I'm reading this just to pass some time. I've read up to 200 plus chapters, at first it was fun as I enjoy simple fantasy novel. But then there are some inconsistent informations and the skills are off balanced. I might be wrong but I've went back a couple of chapters just to confirm it. Emergency quest, that he needs to install fear to the Song clan, he got a "Temporary" blue prints to get his ammo for the tank (Main tank ammo, grenade ammo, and machine gun ammo) for 1 hour he can make those ammo with a high rate of failure. When the quest was complete he still didn't get the blueprint for that if I'm not mistaken, but when the dungeon break(Cerberus Overlord) happened, it was told that he was making ammo when he was moving to a good position. There was still surplus ammo that were not used in the Song clan attack, and the story told that he can't make the main ammo for the tank which was very confusing. idk but the mc's stupid. In later chapters he was thinking on how he would pay his debt to the system when in a few chapters before he said that he could earn 1.5 or 1.2 million gold coins if he hunts an 8 circle rank beast, then he would give it to song yue or chang bo so they can buy guns from his store to complete some quest. Idk why he's not going hunting when he have overpowered skills, op guns/vehicles and op androids. He can at least hunt monsters for a couple of days and have more gold coins where he can exchange it for credits to buy something from the system store maybe pay his debt from the system. There's so many things he can do to earn more money but most of the time he just spends time in his store buying 9mm bullets for the 2nd prince's order. Some skills and ether weapon skills are just broke af. He has this Lighting Clone which he can only use for 100 seconds at it consumes 1% ether per sec. which is 1 rank higher than him with 150% attack. Which doesn't make sense even if he has 10 thousand ether(the mana of this world) or 1 million ether the skill is still op. There's also the 1st skill of the ether weapon Defense Missile Launcher that consumes 100k, 1 million and 10 million ether(mana) for single target missile. But then there's the 3rd skill where he can launch a wide range attack 60 energy missiles with 200% of his attack even if it has 9.9 stats limit (the peak stats for the current realm/world he lives in /peak 9 circle) he only needs 50% of his ether to use it. Which means even if he uses an advancement pill to get 1 mil ether or not he can already kill almost anyone living in that realm. There are many other things that i can point out, like lack or informations and other loopholes. I enjoyed some part cause I'm just a casual reader but the story doesn't deserve a really high rating.