Achievements are more difficult to set up than anticipated. I have however added a few features and I'm managing glitches.
Added new area for DLC and a portal.
Added Health cube
Fixed box being locked out when trying to purchase without enough money.
Updated EXP cube design
Drones now de-spawn on player death
Cone robots now pause and de-spawn
Cone robots spawn mini robots
Added DLC Message for owner feedback
Fixed bullet physics for long shots (it had a 100m radius before deactivating physics)
Spike strips
Daily Rewards
Zombie Signs are still hard
Lava signs curtsy of Hawaii
Known Glitches
Items are placed too high
Picking up items is sometimes difficult
Still some FPS drops when items are too much
Some esthetics are still mediocre and could use redesign
The heart companion from the box is not useful
Will be increasing the screen view radius slightly
Will be deactivating parts of the map as teh player moves through it.
There is zero lighting
Possible Features (these are not in the 1.5 update)
Map expansion
Bridges
Better mob spawning
Gun types
More upgrades (shock cannon?Mini gun? nade launcher? anti-air? anti-tank?)
May add DMV for bounties, licenses(for new mob types),shopping, to pay debts, buy insurance, collect hazard pay
Acid sign
One way sign(can only go one direction for x minutes)
May add abandon cars and construction equipment
May re-add extra buildings
May add difficulty levels for invisible signs.
Could add flyable drone with shooting capabilities
Underground tunnels
Graphics enhancements while keeping cartoon feeling
Acid rain
Letters from mailbox
New locations to teleport too
Butterflies
Tickets for shooting protected signs?
May add death row where mobs drop instant death vials
Bad perk to turn all mobs on the map invisible
Box moving after a random number of uses
Aliens and secret underground base
Fire!
May enable "Night Shift" in free version (even though this was added post DLC)