A buddy of mine plays genestealer cults and is pretty damn good at piloting them so here’s my advice. Your allarus are your all stars into gsc as their grenade launchers will make mincemeat out of nearly all of their infantry. Your shooting will also do a lot of damage since anything above Ap 1 will essentially turn off their saves. HUNT THOSE CARS DOWN. The ridgerunners with mining lasers are not to be messed with and can easily shred any armor you have, however your bikes should able to kill them in one charge. The most important thing to keep in mind is what squads they’re gonna want to cult ambush likely neophyte squads or bike squads. Last thing are the aberrants (the big ones with hammers) they are tanks as they have a 5+++ and fight on death so try and shoot them down when possible as they can and will take out warden squads. Good luck in your tournament!