just master one gun at a time, get sniper+ supergame + hardcore at ak 47 before moving to colt, it is way easyer to fully master one gun, then trying to make Timed 1 on several guns at once, its not that hard to do supergame after 5+ regular games, and hardcore is cake after you did super game
you dont have to spend any kreds to progres in this game. in time you get all achevs for unlocked gun, you get more then enough cash to unlock next one. If you still short, you can always do hourly challenge (300 exp per right guess) and even more, you can replay game mode for Tec-9 (AK-47 -> Colt 1911 -> HK MP5 -> Tec-9) . If you fast enough, it takes under 1,5 min to do full game (just 35 parts) and makes you over 500 exp if you also make it in top 3 + sniper
for people who have fps issues and use chrome: by default chrome uses its own flash player which has memory leak issues. Search web for "Disable PepperFlash in Chrome" for instructions. Warning: you will not be able to use any of your old saves for this and other flash games if you do so (chrome player stores data in different place then adobe player).
imo 'crappy' graphics in travel screen is just the part of whole parody thing. Pseudolonewolf did great job, if you ever played jrpg games like 20 years ago, then game becomes 10 times more funny for you. Some of dialogues are just hilarious, if you ever care to read them.
I must confess first time i tryed it out, i lasted for like 5 min. But short time ago i tryed renewed mardec 1 and then could not resist to try 2nd part, then 3rd..... Now i must say it is one of best games i seen on kongregate and i will do my best to get all badges for this one like i did for part 2. And i really hope Pseudo will do sequel soon.