I just completed my first game of MoM and as the Keeper resoundingly defeated the Investigators (Gloria Goldberg and Ashcan Pete). I chose objective 1B, so samples were my goal. Due to being able to take a sample and then command minion I was able to get two samples to the altar before the completion of event 3. The investigators had no means of keeping up with my minion running away, and as soon as it got past the locked door they couldn't get to it.
I'm wondering if anybody else has encountered this, since the minion can move 3 spaces the investigators can only keep up with the minion and not attack, or is this a problem that happened because of the particular investigators involved and the lack of them having any weapons?