Danger lurks from every corner...

Alien Scouts VS. Isolated Pyros is a group for all who find the set bonuses between the two classes to be a fun mini-game. If you dont know about these bonuses, you might be surprised how game-changing they can be.

Alien Cranium[backpack.tf]
Biomech Backpack[backpack.tf]
Xeno Suit[backpack.tf]
When all items are worn together, Your melee weapon will do 4X the normal amount of damage to a pyro wearing the Isolationist Pyro Set.
Halloween Mode/Full Moon must be enabled to use this set!

Enchantment: Eternaween[backpack.tf] For use in Non-Halloween Servers

MK 50[backpack.tf]
Nostromo Napalmer[backpack.tf]
When both items are worn together, Your Nostromo Napalmer (stock Flamethrower reskin) will do 5X the amount of burning damage to a scout wearing the entire Alien Scout Set. This does not include afterburn damage.

Note: Critical hits stack ontop of the extra damage bonus for both sets.

(Video) Demonstration of the Sets
(TF2 Wiki) Alien Scout Set
(TF2 Wiki) Isolationist Pyro Set