Obstacles

Overview
Obstacles are objects which block movement of players or enemies, as well as projectiles. They are listed below;

Wooden Wall
A block made of wood. Cannot be moved; blocks tanks and bullets. Has a moderate amount of health. If shot by Flamethrower will continue to burn. Appearance: Dark tan with waves through it.

Brick Wall
A block of bricks. Cannot be moved; blocks tanks and bullets. Has a moderate amount of health. Appearance: Small-size red bricks.

Reinforced Brick Wall
A tougher block of bricks. Similar to bricks but with a lot of health. Appearance: Bigger bricks, and in lighter shades of red.

Concrete Wall
An indestructable block found at the edges of stages, and making up most walls. Cannot be moved or destroyed. Appearance: Dark grey on the edge, then a thin strip of light gray, the rest is gray with specks of light and either a small dark square or a dark corner.

Cracked Concrete Wall
A version of Concrete Wall which can be broken; usually used to indicate secret places. Appearance: On the flash games, it looks like a Concrete Wall with small cracks in it; on the Mobile version, a wall which has no cracks on it at all.

Gate Wall
A wall which has a moderate amount of health and when broken will destroy all adjacent Gate Walls; often used to separate different rooms. Appearance: Possibly a 3D trapezoid viewed from above.