Connect collected metal with the task that caused difficulty.
Use the mission as context
Metal Army War: Revenge describes fighting robots, destroying traps, rescuing hostages and collecting metallic materials for weapon and health upgrades. Read the current mission before treating every action as equally useful. A rescue requirement is a particular condition, while defeating an enemy may be only one step toward it. The description does not provide a verified map or complete mission sequence.
Keep the control mapping reliable
The supplied control record lists many first-player actions but cuts off during the second-player mapping. Use the running game's complete instructions, especially if sharing a keyboard. Do not reconstruct missing keys from the first player's layout. A mistaken input can resemble an ineffective weapon or movement problem, so establish the mapping before drawing conclusions about equipment strength.
Match spending to an observation
At an available end-level market, read the effect of the upgrade you are considering. Compare it with a concrete problem from the completed attempt: a health loss you can explain, a difficult enemy interaction or a task you could not perform. This note gives no tested weapon ranking or guaranteed purchase order. Its purpose is to make the collected material answer an observed need while preserving the distinction between rescue objectives, control learning and equipment improvements.