- Estimated achievement difficulty: 1/10 [Achievement Difficulty Rating]
- Offline: 12 
- Approximate amount of time to 1000: 1-2 Hours [Estimated Time to 100%]
- Minimum number of playthroughs needed: 3
- Missable achievements: None
- Does difficulty affect achievements: No
- Unobtainable/glitched achievements: None [See Note*]
- Extra equipment needed: None
*All ACA games have a tendency to not unlock random achievements. If this happens, just hard reset your Xbox and attempt again and it should unlock
Metal Slug was released on NEOGEO back in 1996 by SNK, and has been ported directly to the Xbox One by our new best friends over at the bizarrely named Hamster Corporation. As with most of the other games so far released in the ACA series, this side scrolling shmup is a pretty fast completion, requiring little skill to finish. You only need to play each game mode once, but will most likely may take few more tries.
Step 1 - Original Mode
Start up in original mode, and change the difficulty to 1 and change players as high as you feel you may need. Run through the levels, killing everything you see and rescuing as many POWs as you can (you have to shoot them free then touch them with your guy to rescue the), picking up the score related achievements on the way. Once you have them, let yourself run out of lives and unlock the two high score achievements. 5 achievements for 420.
Step 2 - Hi-Score Mode
Hi-score mode is tougher, as you have to play on difficulty level 4, and only have two lives. However, if you can finish the level without dying and rescue all the POWs, you can get all the related achievements on the first level. Make sure you get the four hidden POWs near the end of the level (see "HI-SCORE 150,000 points"). Once you have the score related achievements, let yourself get beat and upload your score for the related achievement. 4 achievements for 340.
Step 3 - Caravan Mode
Rinse and repeat what you did in step 3, this time in Caravan mode. As well as not being able to change the difficulty, you have only 5 minutes to get the high scores. However, this should be plenty of time in this game. Once you have the score related achievements, you can simply quit out. 3 achievements for 240
Metal Slug is a classic, and is just as fun to play as it always was. If you want the completion fast, it doesn't take long to learn the first level. If you don't mind the price point for not much bang for your buck, and appreciate an easy 1000, then this game comes highly recommended!
[XBA would like to thank Corrupt. for this Roadmap]