tokugawa wrote:1 troop is illegal.
What? I think you misread, he has Grotsnik's 'ard boyz (troop 1) and shoota boyz (troop 2).
OP, if that's a 30-man squad of 'ard boyz, they have decent staying power especially if cyborked, but with Grotsnik they will be charging towards the enemy, so don't expected them to last forever. When I have faced Grotsnik (and when I've used him), the Mad Doc becomes the primary target to get rid of the
FNP (and a power klaw) for the unit.
30-man shoota mob will last you quite awhile if you use them well and can spread out to cover multiple objectives. Only two troops choices makes you a little vulnerable, but they are large mobs.
Personally, if you're going to run horde/footsloggin' style, I would recommend at least one and maybe two more full units of shoota boyz and you will have zero problems with long term survival.