This amusing move-and-shoot game is worth the low price, especially if you like some slightly odd humor.

my likes
When using the keyboard and mouse, movement is via the keyboard, and the mouse is used to aim a handgun or rifle at a few specific places on the enemies. (You can easily be moving in one direction, and shoot in another direction on the screen. Click on what you want to shoot, and as long as you had a straight line-of-sight, you would hit it.) This type of aiming seems rare in games, but has a natural feel. (The game also supports a controller, but I have not tried that.) Unlimited grenades can also help at times (but be careful about blowing yourself up; I've jumped on my own grenade accidentally a few times). Early on, you also gain an ally which follows you around to help shoot the enemy. Both you and your ally level up, and you can improve some of your own stats at each level up. Your camp, the safe zone, allows you to buy upgrades such as weapons and armor. Multiple "secret" tunnel entrances allow you to jump to parts of the levels you're already reached in the current or previous play session. I like that there is no real penalty for death (and there are even a few cutscenes you won't see otherwise), except starting from base camp. (But with the previously mentioned tunnels, it usually does not take long to return to your previous location.)

others' potential dislike
The graphics are a low-resolution. If you need good graphics, look elsewhere. The screenshots with the smaller people are the playing graphics. (The large people are cutscenes.)

my dislikes
A few things such as game mechanics could use a little more explanation. There are only a few pre-defined key layouts. (However, the default should work for most people: most of the game is just moving WASD, shooting with mouse 1, reloading with mouse 2, and grenade throwing with mouse 3.)

disclaimer
I purchased this game normally, but also later received a free copy of this game for helping a bit with a test release. The game author did not ask me explicitly or implicitly for a review. The game author also did not threaten to reveal my heart-covered boxer shorts if I gave a bad review.