Single player, by 
OK, I do have WinRAR. Played the levels. Please use WinZip next time.
OK. Here is the review with the negative comments removed.
STORY:
Just get on the space ship and get to the base. Not very original. 3/10
LEVEL 1 – Untitled (Give it a name please)
EYECANDY:
Not good. Only Layers 4, 5 and 8 were used. The background was just space and nothing else. 2/10
GAMEPLAY:
Only thing to do was to activate a switch and get on the ship. Too easy and too short. 3/10
OBSTACLES/ENEMIES:
Just 1 obstacle! Only obstacle was the wall blocking the ship which could be turned off with the Trigger Zone. No enemies either. 2/10
TOTAL = 5/15
LEVEL 1 SCORE = 5 / 3 = 1.6666666666666666666666666666667
ROUNDED TO 1.7
LEVEL 2 – Untitled 2 (Again, please give it a name)
EYECANDY:
Layers 1, 2, 4, 5 and 8 were used but the Eyecandy is still not good. Background was just space. 3/10
GAMEPLAY:
This was just a cutscene. Nothing to do but watch. N/A since there was no GAMEPLAY.
OBSTACLES/ENEMIES:
N/A coz this was just a cutscene.
TOTAL = 3/10
LEVEL 2 SCORE = 3/10
LEVEL 3 – Untitled 3 (You guessed it no name again)
EYECANDY:
Still not good. Only Layers 3 & 8 were used. Hardly any Eyecandy. Same as Levels 1 & 2. 2/10
GAMEPLAY:
There wasn’t an exit. The level was impossible to finish. All you could see was a Spaceship and nothing else.
1/10
OBSTACLES/ENEMIES:
There isn’t any. 1/10
TOTAL = 4/30
LEVEL 3 SCORE = 4 / 3 = 1.33333333333
ROUNDED TO 1.3
PLUSSES/MINUSES:
PLUSSES
None
MINUSES
No music. -0.1
CALCULATING OVERALL SCORE: 1.7 + 3 + 1.3 + 3 (STORY) = 9/40. 9/4 = 2.25
ROUNDED TO 2.3
OVERALL SCORE = 2.3 – 0.1 = 2.2
Conclusion: Don’t download this level pack. It’s not good. Levels are too short and too easy. No enemies in any of the levels. Eyecandy is not good.
Download Recommendation = No
No = 1.0 to 4.9
N/A = 5.0 to 6.9
Yes = 7.0 to 10.0
Edited to correct some maths errors and to remove negative comments.