At least 10 rooms can be platinumed: Whelps have Wings, Veiled Retreat, A Cave with Chaos, the Sweet Lure of Meat, Uh Oh No Loot Bags, A Little Help From My Friends, Her Royal Highness Kro'la, Someone must be Trap Happy, Deadly Loot, and The Final Confrontation.
On the one hand, there's no instructions given at all. On the other hand it seems really easy right now. It's ok, but it doesn't seem to have anything that separate it from other 2d shooter/tower defense hybrids.
There is an instructions button, On the title screen, about a centimeter to the right of the play button is the instructions button. I have no idea how nobody sees it, but clearly nobody sees it. I'm working on making some changes to add strategy for the full version, as well as some weapons that have fun effects.
Heh. If you get a 100% clear, (all 60 treasures, all 60 challenges, and all 80 badges), you start each level with Hatfield's pistol. And Hatfield no longer has the pistol if you fight him again in the last level.
Bontegames, if an orange dot appears in the middle of the field late in level 14, you're forced to make a loop small enough to kill you unless you get lucky with future pick ups. If you could go both right and left this wouldn't be a problem, but you can only go right.
The API for perfect jump streak only submits the current active streak when you die. You may want to create a variable that stores the max perfect jump streak during the current ride, and submits that when you die.
You should probably add API that reports the number of Stars you've earned. Also, it would be nice if the score system remember you best score on each level, and that the total score was the sum of individual best scores (so you can't inflate your score by repeating levels multiple times.)
I can't rate this higher than 3. It's a viable strategy to not play the game (you'll pass a level roughly 50% of the time if you do that and it's fairly difficult to die) and that means that there aren't very many interesting strategies.
If you are going to put fifty shift+a jumps in the game, the least you can do is let us macro shift+a to q or something.
Also, put a save point on the bottom of room 20 in beginner. It's obviously useful.
You need only about $5000 to make it to Mars: the key is full radar + full fuel sucker plus some money in fuel tank and launcher upgrades; then use the radar to turn the game into a platformer and gradually climb your way up to Mars.