Damage Reduction and Fast Healing feats are a bit of a waste of feat space, as we can just give as much of those as we like to the base monster. Unless of course you're saying that a normal gammaroid doesn't have those SQs and only the sample does. But still. I always like Stand Still as an option. Penetrate Damage Reduction is also ok. Power Critical, too. Do you guys like any of those options?
Unless of course you're saying that a normal gammaroid doesn't have those SQs and only the sample does.
How about we give it Stand Still and drop one Fast Healing feat to make way for Penetrate Damage Reduction (cold iron)?
Eh, could have dropped a Damage Reduction feat instead. But ultimately I don't mind much either way. The real issue is the difficulty finding inspiring feats for a monster like this.
Tactics next?
That'll all work for me.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.