So the only way to get the mountain killing buffs is to buy them with gems? And a lot of gems, 550 for the Shotfirer, and 990 for the Demo Crew. One clears 5 spaces, and the other 9 spaces. So basically 100+ gems per space cleared. Not really sure that is worth it or how palatable that is going to be to the player base.
Sure hope you do come out with Scenarios. Sounded like a way better way to get these buffs. Or make the buffs an event drop at least.