1. Mount Slagel = generic mountain name (I guess)
2. Jalapeno = Spicy Vegetable (e.g. for making salsa)
3. Death From Above = a technique that you jump and land on your opponent or a kill from above.
4.EDIT: The Southern Cross =
5. Bushwacker's Paradise = a paradise for a someone who spends time in the bush (Australian ("That's how we do it in the bush!" ) or (sarcastically) a paradise for a 55 ton battlemech from the Battletech/Mechwarrior universe (the Bushwacker 'mech debuted in the 1994 Battletech rulebook, "Battletech Compendium: The Rules of Warfare")TopGun's correction wrote:a specific constellation visible from the Southern Hemisphere.