Buildings and barriers
Security sensors and systems
Weapons
Guards
Traps
Boomerang knife
Literal hand grenade
Human sensing alarm
Missle silo
Giant teddy bears
Shock stick
poximity bomb
unhidden bunker
Every direction flamethrower
every direction gun
every direction cannon
nuclear depth charges
Lightning summoner
10000PSI water cannon
Above ground landmines
six foot spikes
nuclear short timed depth charges