Every 5-10 minutes a turret is placed directly on top of the annihilator. You can interact physically with it and it interrupts movement, but it is invulnerable. In addition, sometimes turrets in base disappear but can still be attacked (no hp HUD so determining its death is only possible by gauging your hp loss.) The latter is very annoying, while the former is only merely somewhat amusing (also protects noobs who use charge into the anni platform from falling off with the edge-double jump bug.)
