Experience System and Achievement System

We all know Noobonic has the experience system for mining, running, printer management, and two other things I can't remember. Well, what if it was in LitoGaming RRP?
Although this would be difficult to code, Experience system could include:
Printer management (maybe)
Healing - (You heal faster the higher the level, and if you get to max level you get perma medkit, although this would take atleast 200 hours of gameplay to do.)
I can't really think of many more things you could level up, but PLEASE post comments below:D.
Now for an achievement system....
There could be achivements like time spent on server, time spent doing certain things, money collected from money printers, maybe one called "Rich" for $100,000, and one called "Bill Gates"
where you have to collect $1,000,000!
If you have any ideas for Achievements or things you could level-up, please post them, and hopefully atleast one out of two of these ideas will go into effect!

Also, maybe for Healing, in intervals of 5 levels, you get another 5 max hp, and it could go up to level...25?

There's a script where when you kill an NPC, you get experience. I could have zombies in a spawn, like 10, and people can go there to "train" and level up there skills. This would be a new element of roleplay!