Warhammer 40,000 – Genstealers wreck face. There's no two ways about it if you get charged by a unit of them they are going to put a hurt on whatever they charged. There's a reason I've always loved them and can't wait to get back to work on my Genestealer Cult (I'll probably not touch them again until a codex comes out, honestly). In the meantime I've been painting more to go along with the rest of my clients Hivefleet Leviathan horde.
Besides some cool new mutations in this book the Genestealers also gain infestation nodes that are placed on the table and the unit can pop out similar to deep strike. It's cool to have a use for the weird egg things that come with the basic kit.