I just completed borderlands 2, but I want to restart for True Vault Hunter mode. Will I lose my first playthrough?, Or can I transfer it to another PSN account and do TVHM on my main account without losing anything?.
At least on the PC the TVHM doesn't wipe your previous play through completely. When you choose a character it will let you choose which mode to play the game in so you could go back to playing pre-TVHM again. One thing that made me not want to go back was that my challenges carried over. Since I wasn't starting the Challenges over I was happy to keep plugging forward. You get to keep your Eridium and bank inventory too so it doesn't feel like you're starting over.