Robinette Builds/Robinnet at 530,000 kills
First, we'll try to put together our own weapon and tome build. We'll start by upgrading your Aura, as it gives you a better chance of killing waves of monsters (without upgrading it early on, you'll have a low chance of getting maximum experience). Then, we can gradually upgrade other weapons.
Tomes:
First, we'll try to improve Tome XP as much as possible, as it's important for us to exit the first location at at least level 45-50. It's also important to remember to constantly increase the game's difficulty, which will lead to increased monster spawns and the value of experience drops. We'll improve the other tomes equally.
Tactics:
The most important thing is to find a credit card (Green) at the very beginning, as it will boost your luck. WARNING: Do not open any chests until you find at least one credit card (Green). Thanks to Golden Tomes, you will receive a large amount of gold, which you must spend on opening chests to maximize your luck.
Starting at Tier 2, you should ideally open all chests on the map, activate all additional boss summon statues, and survive for 12 minutes after the main timer expires. By this time, you will have 100,000-120,000 kills and around 700 levels.
At Tier 3, you do the same thing, opening chests and so on, and also survive for 16-17 minutes after the main timer expires. ATTENTION: It's very important to save your gold, as it's your primary damage source.
Next, in the boss room, you destroy the boss in an instant, stand in the center of the room, and enjoy 18 minutes of farming mobs. After 18 minutes, kills will come very slowly, and this will likely be your end.
This build is tested and recommended for conquering the leaderboard!