Sentry

Sentries are Hostile NPCs that are most commonly found in survival mode, but can also occur in other game modes (e.g. the flare in Space Zone).

There are 5 kinds of sentries : They can hold all type of weapons (Spike Bow and sometimes Matter weapons) and a plate and a helmet for protection.
 * Left top corner image : Hanging on the roof throwing Throwables.
 * Right top corner image : Hanging on the wall holding a gun.
 * Middle image : Standing on the ground throwing Throwables. Found in Safest Gate at the far left of the map.
 * Left bottom corner image : Standing in the ground holding a gun. Found in Safest Gate at the far right of the map.
 * Right bottom corner image : Holding a gun and move right and left, cannot turn or shot upwards/downwards. Found in both Survival House and Safest Gate at the right of the spawn.

Defeating Strategies
Every Sentry has a big handicap: It can only shoot in one direction. Attacking it from behind or from any other direction it can't shoot at will allow you to defeat them relatively quickly.