Solving Ethernaut challenges.
The ethernaut is a Web3/Solidity based wargame inspired on overthewire.org and the El Eternauta comic, played in the Ethereum Virtual Machine.
Each level is a smart contract that needs to be 'hacked' in order to advance.
Wallet used for the challenges: 0x2b25d052299aa226c88b872d9e7526424bbb170a