Can I finish Terraria with only Minecarts?

What if instead of using a sword or bow, you ran over your enemies with a Minecart?
This video covers the Hardmode segment of the Minecarts only challenge.
The Pre-Hardmode segment is available here:    • Can I beat Terraria with only Minecarts?  

The unedited fights featured in this video will be posted here on my second channel:    • "Terraria Minecarts Only Part 2" Uned...  

== Chapters ==
0:00 - Recap
0:17 - Act 1: Hardmode
2:18 - Act 2: Intellectual Chests
3:54 - Act 3: Triple Life
6:23 - Act 4: Elderly Plant
8:22 - Act 5: Tank
9:37 - Act 6: Pillars of Hatred
11:57 - Act 7: Get Moody

== Socials ==
Twitter:   / kelpkepples  
Discord:   / discord  
2nd Channel: ‪@keppos‬

== Music Used ==
Kirby Planet Robobot: Haltmann Works Co. Theme Song
Kirby Star Allies: Reborn Butterfly
Calamity: Flight of Beezelbub
Super Paper Mario: Brobot L-Type
Kirby’s Return to Dreamland: Stream Riding
Kirby’s Air Ride: Checker Knights
A Hat in Time: Your Contract Has Expired