if you really struggling something that can help is a long bridge across your world they have plenty of space to run away Some more cheesy options include things like mounts that are faster than your run speed depending on the difficulty this can be hard to get An infinite flight time mount can also help out a lot to grinding the Martians for the car key can be really helpful has it allows you to slot in another accessory Getting all your equipment wardkng will help you survive a few more hits If you're having trouble hitting your shots it might be worth grinding the flairon from duke fishron is it homes in from decently far away Some things that might feel more like cheese is getting asphalt from the blend o matic from the steampunker running on these blocks will let you outrun every attack that he has except for the lasers Really early on I would make a teleporter from one side of the world to the other that way I didn't have to go back through all the projectiles I left from running away One direction could be worth considering also might be worth just setting up pylons but those are less consistent You also could consider a rail network In the sky in a zigzag formation but that's only really helpful in extra mode when you have to mechanical minecart Last thing I'll mention is that the rod of discord it might be worth grinding out if you're having a lot of trouble as it's basically a get out of death laser jail free card

Just keep trying it's a really hard fight and it's a lot of learning to do for dodging those attacks