Sniper Ghost Warrior Contracts

I’ll add qualmz’s hint. You can select multiple skills. and after the last one you leave the game, come back, your skills are pumped up, your currency is intact

Game patch version 1.03 - Attention! The game during the tests is buggy and from missions 3 to 5, for completing some tests you will not be paid the coveted star-points, which may not be enough to purchase the 57 skills you need (for some reason I got the prize when purchasing 55 skills) and admission to these tests will be closed and when these missions are replayed at the start, they will already be failed. My advice to you is not to buy gadgets that require star points, take care of these 4 points, they will help you if you don’t have enough to buy skills. Also, first buy all the skills that cost 1, and only then for 3 - or choose any three skills for 3 that you don’t want to upgrade, and upgrade the rest of your choice.