Metal Slug Steam Achievement - Metal Slug Attack

[BLUEVOODU]

I didn't notice that I missed the achievement "Metal Slug Attack" in Metal Slug on Steam.  As of writing this message, it is a 6.9% of players completed achievement.  I just got the achievement.

Essentially, you just need to defeat a boss with the Metal Slug Attack.  This is the attack where you send the metal slug flying in front of you and explodes on whatever it hits.  You can do this attack with your Fire and Jump button, hitting them at the same time.   It's a pretty easy attack, timing it to kill a boss is not always the easiest.

The easiest way is to do the 1st stage on easy.   Your mileage may vary... but get the metal slug, keep it and ensure you pick up the extra bombs on the way hidden in crates and with POWs that you rescue.   When you get to the boss, hit the boss with about 8-10 Cannon shots (bomb button).  For the 1st boss on easy, I used 10 shots.   I dodged the next 2 attacks (ducked and jumped)... and then performed the Metal Slug attack slamming the metal slug into the boss.

It worked, achievement received... and this is a pretty easy way to do it.

Here is a good guide and video to show how it's done as well.
https://steamcommunity.com/sharedfiles/filedetails/?id=521786379