Well, I want to give suggestions so read plz.
This is not good, but if improved it probably could be...
Suggestion time!!! :)
1. spiders come from 1 side.
2. LEVELS!
3. NO SUPER SMALL ONES.
4. it gets harder each level.
5. different spiders, such as ones that shoot web at your weapon (the web freezes weapon for 2 seconds or more.) they would be slower than normal though, or poison ones which shoot poison at your weapon and slows it but the weapon can still attack, just slower for a few seconds.
6. different game modes, like survival (one endless level, and an online scoreboard.), or onslaught (it would be the normal mode, level after level.), OOOOR training mode (you get to have all weapons, choose when they come, what type, how many at a time. So basicaly you would just TRAIN on this mode.) .
7. At end of each level there would be a store where you buy weapons, house ups, and so on.
So please, take these in mind, I mean come on, a few changes couldn't hurt could they?