- Achievement description: Defeat all the red bonus ninjas
- This achievement is cumulative between game sessions and playthroughs, you can check its progress on the achievements in-game menu, although it doesn't show which remaining stages have ninjas that you need to kill.
- There is a total of 23 red ninjas on the main campaign.
- Only one mission has more than one ninja (Tropics 06).
- This achievement can be obtained on either Classic, Arcade or Survival modes, but Classic is the most recommended for convenience.
- Red ninjas killed on Timebomb mode do not count towards this.
- You can kill the red ninja of a mission and quit it right after: it'll count towards the achievement's completion.
- They'll only appear for a few seconds, so use an accurate and hitscan weapon if you can. You can always reload the level if you miss one, anyway.
- I found the Auto Sniper Rifle to be the best weapon for this, due to its accuracy and high ammo count.

Hovering your cursor over any screenshot in the guide will display its corresponding information found in this section.

• Mission 03 - On top of the cabin above the river
• Mission 05 - Right at the start, behind the edge on the right end side of the bamboo fence
• Mission 06 - 1st one: near the end of the second Run 'n Gun, inside a cabin
• Mission 06 - 2nd one: after the same Run 'n Gun as above you'll arrive at a river, then he shows up from behind the farthest cabin in the background
• Mission 08 - On tank, hard to miss
• Mission 10 - On tank right at the beginning during the jump sequence
• Mission 11 - During the level's second Run 'n Gun, at the background
• Mission 13 - During Run 'n Gun at the end of the level, behind trees in the background
• Mission 14 - On the area after a hostage scene, hanging from a tree upside-down

• Mission 02 - In one of the windows right at the start
• Mission 06 - Easy to miss: during a Run 'n Gun, behind a billboard
• Mission 10 - Next scene after getting out from elevator lobby at the start
• Mission 12 - Easy to miss: after the second windows scene in which the building goes down, he'll appear inside a destroyed tank at the last few seconds (aim near the edge of the screen)
• Mission 13 - At the start, on the scene with the 6 doors, will stick his head up from a door on the right-hand side

• Mission 02 - On a tank during the Run 'n Gun at the end of the level
• Mission 04 - During boulder section, behind pillar
• Mission 05 - After the grenade section at the start, you face a building supported by pillars; he'll appear behind the second pillar
• Mission 08 - At the start, inside the cave on the right
• Mission 09 - Right at the start, behind the boxes in the middle of the screen (a hostage appears at the same spot later)
• Mission 10 - When racing against ninjas on motorbikes, he'll appear inside a tank in the background
• Mission 11 - Hard to miss: on the next scene after the first mummy appearance, right-hand side
• Mission 12 - During the mission's second hostage scene, obstructed by a fallen pillar
• Mission 14 - During a hostage scene, on top of the rock structure in the background

This achievement isn't really that hard to get if you try to be attentive, but normally some red ninjas are easily obstructed by flashing texts and all the effects on-screen, so there we go. Either way, if this guide helped you find and kill at least one red ninja, it has served its purpose.

There we go. If this guide has helped you out, don't forget to rate it. And if there is any way that I can make it clearer, do comment.