Order buy and build variations

First you need a safe way to split, you need to know that you are squish and can be easily exploded if crowdcontroled early game. There's no logic to upgrade dynamite first cuz you need get closer throw it and getting this closer can be dangerous. Then after finishing full, your combo should already cleaning a lane alone. Then you should max dynamite to deal more damange to towers and make your siege easier cuz you explode incomming waves with your combo keeping your droids protected from tower and enemy wave damage. After it you build tankness and sustain to keep more time pushing and putting more pressure into your enemies. You put then in a decision, or they will 3v2 your teammates and you cleam up their towers or even destroying their drill or they will hunt you when your teammates rotate to damage/destroy another tower. It's almost a win=win situation but you need to have teammates with a brain to make this work. After health you max blaster cuz you just have it to upgrade in this phase of game.Slow is very useless in my opinion, their push is enough to put way enemies that are chasing you and the slow is unecessary to kill a enemy by pushing a enemy to your tower because you aren't rushing kills. The bigger bull can still be debated because i'm assuming that you have enough mechanical skill to hit your bulls at enemies against walls without needing a upgrade. It will delay your combo effectness a little bit but if you think that it worth, it's up to you. You need cooldown reduction to spam your bull and damage/explosion to kill droids faster and protect your own droids of famage.You don't need heal, you will build tankness ahead. Cooldown is useless cuz you are spliting push and your dynamite aways will return before another wave comes. And -1.2 sec for hiting 3 dynamite is not a big deal too. I really recommend you to go bouce of explosion size cuz you need to hit your dynamites from a safer distance. Droids are most of time very closer so you don't need a bigger radius to hit them.This time personal preference scream louder. I don't see any cons on another options. Just health is 100% needed cuz you need survive. The less you feed your enemies, the more chances to win you have. Of course you can do ridiculous wins with 3 levels behind and 0/11 like i did a lot of times, but you shouldn't aways coun't with your enemy dumbness to finish a game, right? The solar is really necessary cuz you need a confortable early game and your late game isn't big deal, so you aren't losing much for don't buying boots or shield. Every solar you can get on early game really worth it. The regeneration is really up to debate cuz the shield or debuff still worth it's slot. It very very much about matchup, if you fight a full crowd control team i would recommend you to go for debuff reduction. Based on my personal experiences, like 80% of time i would go to regeneration. The boots are very useless for me. I don't see any ultility on this build cuz you don't need to be fast and third jump are just useful to switch lanes. If you didn't bought solar on early game, the boots can considered as last item to get faster on drill at late game.This 100% personal preference. There's bad and cons of both choices. I prefer damage/attack speed because i get a huge 1v1 potential if a manage to outplay the enemy with the bull and it easy to destroy towers with bullets than missiles (if there's still any on late game). I don't like shooting like klunk with lonestar, so i didn't put it on build. If you disagree and prefer missiles, feel free to use it. I don't think you loose much by using missiles.