Re: 0.1 BTC prize - Find Electrum pass by knowing both unecrypted+encrypted wallet?

However I'd like to try the bruteforce to a certain extent, at least to be content that I tried that option too.
Can anyone direct me to a bruteforce tool for electrum, preferably one that I can set up my own alphabet.

Check out https://github.com/gurnec/btcrecover I believe it has options you are looking for.

Thanks but it only works with Electrum 1.x and 2.x

Seeds, key derivation and wallet structure changed from 1.x to 2.x but did not change in 3.x. The version 3 Electrum introduces SegWit support hence the major version bump.