Yu-Gi-Oh! Master Duel

A small clarification on this one, as I had originally interpreted this as the killing blow had to come from a 4k plus source. That is incorrect. You merely have to have done 4,001 or more damage in a direct attack at some point in the contest. I had attacked on turn 2 with a 5300 creature and hit. And as I was prepping to kill turn 4, he conceded. I got the achievement that game.

So don't worry about it being the last attack, it just needs to come at some point in the game.

This achievement looks daunting at first, but it's actually quite easy. If you combine the trap cards "D.D. Dynamite" and "Banquet of Millions", you can inflict over 9,000LP damage in a few minutes maximum.

Additional tips: If your primary goal with Master Duel is to get the achievements, then I'd recommend the following tips:
- Invest your gems in decks that specifically aid to the completion of achievements
- Purchase the duel pass with 600 gems to obtain SR/UR crafting materials
- Do NOT surrender in a duel where you have made progress to an achievement. Stats are added up AFTER the duel has been completed, not during.
- Prioritise getting the achievements BEFORE reaching platinum rank. They become very difficult in higher ranks due to how the game is
- Focus crafting generic staples such as Ash Blossom, Maxx "C", and Pot of Extravagance early as they can be applied to any deck to improve their performance