private void setEasyInformation() {
        textDifficultyHeader.setText(R.string.difficulty_easy);
        textDifficultyDescription.setText(R.string.difficulty_easy_description);
        textValueMaxWave.setText(PreferenceManager.getStatisticsValue(PreferenceManager.Statistics.EASY_MAX_WAVE));
        textValueEnemiesKilled.setText(PreferenceManager.getStatisticsValue(PreferenceManager.Statistics.EASY_ENEMIES_KILLED));