The Ethernaut is a Web3/Solidity based wargame inspired on overthewire.org, played in the Ethereum Virtual Machine. Each level is a smart contract that needs to be 'hacked'.
Ethernaut is a great series of challenges and I encourage everyone do it. The difficulty is beginner/early intermediate.
We will be using Chrome devtools console and Remix for solving Ethernaut. Of course we can use Foundry just like what we do in production, but I think getting exposed to different tools is valuable for auditors.