Creatures shouldn't target player/sub if their path to the player has been obstructed by a destructible wall

[Rokvach]

Currently if you go spelunking you may encounter creatures just waiting at the other side of a destructible ice wall, swimming against it. Once you plasma cut that ice they will just all rush you.

This same behavior can also be seen with ice spires, where the creatures just swim against the spire if they spawn on the opposite side of it from the sub.

[A2ur3]

and creatures that stay in abyss can't find way to return abyss if they are accidently spawned in main path they just keep running into map walls