It tried a lot of things relentlessly, just to name a few:

* Exploit kernel CVEs * Weaponise gcc, crafting malicious kernel modules; forging arbitrary packets to spoof the source address that bypass tcp/ip * Probing metadata service * Hack bpf & io uring * A lot of mount escape attempts, network, vsock scanning and crafting

As a non security researcher it was mind blown to see what it did, which in the hindsight isn't surprising as Opus 4.6 hits 93% solve rate on Cybench - https://cybench.github.io/