The best way to say that you already dominated the game once you access all pathogens, genes, levels and frenzy mode as you almost did everything in game. So here’s the guide how can you unlock them easily:
1. Unlocking new levels. To unlock new level you need to beat the current level. The trick here is to finish that current level the easiest option. Here you experience each level starts with new challenges such as beginning in Australia or even Finland.
2. As you started playing a new game, you will have the opportunity to choose what pathogen you want to use, for instance bacteria or virus. So as you use different pathogen to infect the world, the better and more effective that it comes. So your goal is to unlock the newest until all pathogen available in your infection. The trick here is simply win a round with the most recently unlocked pathogen or with the base bacteria if you are just started playing the game. Here you need to win under medium or hard difficulty settings to unlock new pathogens.
3. Unlocking new genes. Compare to pathogens, genes are much easier to unlock but the catch is there are so many genes in game compare to pathogens. As you beat the game, you are able to unlock new genes. The trick here is to set your game in easy difficulty as you are able to get new content from any difficulty. Definitely the more you play and beat the game, the more different genes you are able to use in game.
4. Get rare DNA button. This is another way to unlock additional genes. In this mode you will likely to get rarer genes but then you need to spend gems for it. If you don’t have gems to spend you can read this guide on how can you get free gems in Infection 2 Bio War Simulation. With rarer genes, you can make a better strategy from it as this is far more effective than common genes.
5. Unlocking Frenzy Mode. The trick here is to tap the locked Frenzy Mode button and then purchase it from the App Store. This will also work to unlock the cheat mode for three cheats that you can use in game such as infectivity bonus, stealth bonus and lethality bonus.